I'm about ready to start working up loads for the new Ruger GP100 10mm. I have the Lipsey's edition, 5.5" barrel. I have a supply of Rimrock 220gr cast. I'd like to get what I can out of them, Underwood and Buffalo Bore are getting 1200fps. Underwood Pulldowns have yielded 800x and Longshot. Two powders I have on hand are 800x and Blue Dot. Longshot and Power Pistol and AA#9 appear to be the other popular choices for experimentation. I'm not opposed to buying them.
If you have done this, you know about the scarcity of data. Anyone else messed with these? Appreciate any related experience.
So it's completely apples to oranges, but I was just today testing some loads for my 10mm Glock 20. I was using the 200gr Montana Bullet works SWCGC bullets. I tested two charge weights each of HS6, Power Pistol and Blue Dot. The Blue dot loads were the winner in my pistol. One of my best friends (now deceased, damn cancer) swore by AA#9 in his 10mm glock. AA#9 and Blue dot are pretty slow powders - I'd tend to start there if I was you, as opposed to the faster numbers.
With heavies 180 grs. and up I have had great results with No. 9. I would start and end there. Some other powders may get there more efficiently (i.e. take less grains per round) but if you want accuracy, power/speed, and safe pressure in hot 10mm loads No. 9 does it perfectly.
Mark in GA
The burn curve with Longshot would make it a great candidate, and it always produces excellent performance in the 9mm, 9mm+P, 40 S&W, and 40 S&W+P I've tried, particularly with heavyweight bullets. I've had great luck with plated 220's in the 40, shooting them at about 1050 with Longshot. It's a heavy-spring load, for sure, but causes no wear and tear. Until I got a 200gr GCWFN mould, it was my bear load in an XD 5". I'd start with the powders Underwood uses. I doubt you'll get the top speed out of AA#9. It just isn't that energetic compared to Longshot, Power Pistol, Blue Dot, or 800x. You may get better accuracy though, and the push will be a bit gentler. As well, if #9 works, 2400 will also work.
I doubt you'll get the top speed out of AA#9. It just isn't that energetic compared to Longshot, Power Pistol, Blue Dot, or 800x. You may get better accuracy though, and the push will be a bit gentler. As well, if #9 works, 2400 will also work.
Bad advice Huntnshoot.
Those comments about #9 are not at all accurate. It is pretty much the perfect burn rate and density for maximum velocity in heavy 10mm loads, and will meet or exceed the velocity you can get with any of the other powders mentioned. It's not at all like 2400, which can not generate good velocity in the 10mm because it's too bulky, you just can't get enough in the case.
OP, the Blue Dot you already have will give you pretty good velocity too. I'm not going to offer my load data, since the 220 gr bullets I've worked with are different than Rimrock's and that can have a big effect on pressure. However, I can tell you the biggest differences you'll see between #9 and Blue Dot are flash (lots for Blue Dot, very little for #9) and metering (#9 meters great, Blue Dot is less consistent).
I doubt you'll get the top speed out of AA#9. It just isn't that energetic compared to Longshot, Power Pistol, Blue Dot, or 800x. You may get better accuracy though, and the push will be a bit gentler. As well, if #9 works, 2400 will also work.
Bad advice Huntnshoot.
Those comments about #9 are not at all accurate. It is pretty much the perfect burn rate and density for maximum velocity in heavy 10mm loads, and will meet or exceed the velocity you can get with any of the other powders mentioned. It's not at all like 2400, which can not generate good velocity in the 10mm because it's too bulky, you just can't get enough in the case.
OP, the Blue Dot you already have will give you pretty good velocity too. I'm not going to offer my load data, since the 220 gr bullets I've worked with are different than Rimrock's and that can have a big effect on pressure. However, I can tell you the biggest differences you'll see between #9 and Blue Dot are flash (lots for Blue Dot, very little for #9) and metering (#9 meters great, Blue Dot is less consistent).
If #9 is the best, why are boutique ammo companies not using it? Hmmmmm....
Appreciate all the advice. As far as pushing the 220's I will likely try 800x first, and if I am not satisfied then I will get some Longshot. If I can verify that Buffalo Bore is using Power Pistol, I'll try that too.
I would lean towards Longshot for high end loads.
Hey 79S, yeah I saw those posts about the Underwood pulldowns. I believe previously to Longshot they were using 800x.
I'm sure I'll get a can of Longshot and test both
From what I read 800x was prone pressure spikes and doesn’t meter well. So I went with longshot
Yeah, I may grab a pound of Longshot today. Have you messed with the 220's?
If #9 is the best, why are boutique ammo companies not using it? Hmmmmm....
Mostly because it uses more powder, meaning it costs more per round. If you're trying to maximize profit, do you load with 8.5gr of Longshot, or 13 gr of #9? That doesn't mean Longshot performs better, it's just more economical.
If you're not familiar with something, it's best to not give advice about it.
From what I read 800x was prone pressure spikes and doesn’t meter well. So I went with longshot
That is correct, 800X meters like cornflakes. If you want to run max loads with it, it's best to weigh each charge, because they can vary a lot. Blue Dot is better but still not great. #9 and #7 meter the best, with Longshot and Power Pistol pretty close behind; all four of those meter nicely.
Huntinaz, email Rimrock, they will almost certainly give you some idea as to powder charges.
I've loaded 215 SWC's with Blue Dot, worked well, but I didn't push it too hard; I don't care to share the data.
I wouldn't care to try 800X for that application.
I can't speak to the Accurate powders or Long Shot as I haven't tried them for that heavy a bullet.
I was thinking of emailing Rimrock as well, I think I will.
I picked up a pound of Longshot just now.
Yeah, I may grab a pound of Longshot today. Have you messed with the 220's?
Yes I have, running them out of a Glock. But I been looking at the gp100. I found a good supply of good 220gr hardcast. I run longshot out of my 40withn180's I'm getting over 1,000 FPS with it.
Yeah, I may grab a pound of Longshot today. Have you messed with the 220's?
Yes I have, running them out of a Glock. But I been looking at the gp100. I found a good supply of good 220gr hardcast. I run longshot out of my 40withn180's I'm getting over 1,000 FPS with it.
Would like to know more about that good supply of 220 hardcast if you are sharing. I've been using some 200's and would like to try the 220's.
This is where I got mine. I believe there's at least one other maker. Xtreme? Zero?
Rimrock 220gr Hardcast
Yeah, I may grab a pound of Longshot today. Have you messed with the 220's?
Yes I have, running them out of a Glock. But I been looking at the gp100. I found a good supply of good 220gr hardcast. I run longshot out of my 40withn180's I'm getting over 1,000 FPS with it.
Would like to know more about that good supply of 220 hardcast if you are sharing. I've been using some 200's and would like to try the 220's.
Fella up here in Alaska that makes them called stoner bullets. He's retired from it but if you ask the guy at the gun shop he will get ahold of him and he will make them. I have close too 350-400 of them.
If you want to try some send me your address in pm.
Here is some example test data fired from my Glock G40 last year. In this you can see that No. 9 is very consistent and brings strong velocity.
Caliber Powder Chrg. Avg. Hi Low E.S. S.D. Bullet Primer Cart. OAL Firearm Tested Barrel Len.
10mm Auto True Blue 8.5 1259 1276 1242 34 24 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 9.0 1349 1363 1310 53 12 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 9.5 1399 1400 1397 3 1 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 10.0 1457 1462 1454 8 4 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 8.5 1160 1191 1126 65 33 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 9.0 1232 1244 1212 32 17 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 9.5 1293 1308 1270 38 20 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 10.0 1341 1370 1303 67 35 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 14.5 1393 1397 1390 7 4 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 15.0 1438 1445 1430 15 8 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 15.5 1461 1485 1446 39 20 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 16.0 1496 1510 1487 23 12 HDY 155 XTP CCI 300 1.250 Glock G40 6.02"
Caliber Powder Chrg. Avg. Hi Low E.S. S.D. Bullet Primer Cart. OAL Firearm Tested Barrel Len.
10mm Auto True Blue 7.0 1073 1077 1065 12 7 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 7.5 1139 1140 1138 2 1 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 8.0 1200 1207 1190 17 9 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 8.5 1253 1261 1244 17 9 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 7.0 976 990 948 42 24 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 7.5 1043 1055 1035 20 11 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 8.0 1090 1106 1062 44 25 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 8.5 1163 1176 1151 25 13 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 12.0 1189 1211 1163 48 24 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 12.5 1236 1246 1219 27 15 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 13.0 1271 1287 1252 35 18 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 13.5 1330 1335 1325 10 5 HDY 180 XTP CCI 300 1.250 Glock G40 6.02"
Caliber Powder Chrg. Avg. Hi Low E.S. S.D. Bullet Primer Cart. OAL Firearm Tested Barrel Len.
10mm Auto True Blue 7.0 1106 1122 1092 30 15 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 7.5 1167 1178 1157 21 11 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 8.0 1232 1234 1228 6 3 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto True Blue 8.5 1279 1282 1275 7 4 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 7.0 1000 1011 988 23 12 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 7.5 1060 1067 1051 16 8 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 8.0 1105 1115 1097 18 9 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 5 8.5 1158 1164 1152 12 6 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 12.0 1195 1201 1190 11 6 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 12.5 1208 1221 1194 27 14 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 13.0 1290 1294 1286 8 4 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
10mm Auto No. 9 13.5 1303 1325 1286 39 20 Lee 401-175-TC CCI 300 1.250 Glock G40 6.02"
Mark in GA
that data has nothing 220 in it.
Correct, I haven't tested them as of yet. I posted the data as a real life example. My experience with No. 9 generally has it performing even better with heavier bullets. My experience tells me the original poster with have the most success with his heavy 220's using a slower burn speed powder like No. 9.
One other point of clarification is all loads were fired in my Glock G40 with a KKM Precision aftermarket 6" barrel installed.
Mark in GA
Had good luck with Blue Dot in my Glock 20 stock barrel, 22# spring, 220 GR hard cast . Was trying to duplicate Buffalo Bore 220 gr loads .
Same point of impact and accurate. PM for details
Correct, I haven't tested them as of yet. I posted the data as a real life example. My experience with No. 9 generally has it performing even better with heavier bullets. My experience tells me the original poster with have the most success with his heavy 220's using a slower burn speed powder like No. 9.
One other point of clarification is all loads were fired in my Glock G40 with a KKM Precision aftermarket 6" barrel installed.
Mark in GA
All the reading I did pointed to #9 as well, but I couldn't find any. Further reading lead to longshot, the consensus was stay away from 800x.
What primers do y'all use? Standard or magnum.
With my loads I was running CCI 300 standard large pistol. Seemed to work fine.
Mark in GA
I tried several powders with 200 g and I settled on longshot. 800x performs well but meters so poor I had to weigh each load which is unacceptable. I wish they could reformulate 800x to meter better. I'd like 800x for mid range 44 mag loads and a few others if it metered better. I've always ran longshot and power pistol for my mid range 44 mag loads because they meter ok and give good speed for the charge weight. They both work well in 10mm as well with longshot doing a bit better.
Bb
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
Agreed, I shoot 200gr XTP's at 1200 fps in my DW 10mm with Longshot, were I to need a hardcast it'd be of the same weight and relative same speed, don't know what it wouldn't penetrate, would have to be a digger and may even shoot to the sights.
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
I don’t believe that one would have stabilization problems with a 220 grain cast, but I would prefer the 200 grain. The 200 would have more speed and penetrate very deep in 10mm.
I recently bought a G20 and have been doing load development with 200gr hardcast gas check bullets from Montana Bullet works. I've tried Blue Dot, HS6, Power Pistol and 2400, with Blue Dot the clear winner so far. MBW has two different 200gr bullets, so I am now trying their NOE gas check version.
The charge weights I have seen listed for Blue dot on the internet have been over book max, at least my books, so I am likely slower than what is posted all over. Next step is to chrono the winning loads and see where I am at.
The G20 is stock with the exception of a 20lb recoil spring, which seemed to tighten things up a good bit.
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
Agreed, I shoot 200gr XTP's at 1200 fps in my DW 10mm with Longshot, were I to need a hardcast it'd be of the same weight and relative same speed, don't know what it wouldn't penetrate, would have to be a digger and may even shoot to the sights.
Couple things. This is a revolver with adjustable sights, so recoil springs and point of impact not an issue whatsoever.
The reason I chose 220's is because they can be shot at the same speed as 200gr and I want the maximum performance the cartridge will give me. If we can move both bullets at the same speed, I'll take the heavier.
The appeal of this particular pistol to me, is the idea of a 6 shot L-frame revolver that is set up for moon clips, that will outperform a 357 without more recoil. Kind of a niche market, I understand, but I like it.
An update, I shot some loads yesterday. More testing is needed, but;
Buffalo Bore 220gr Hardcast shot 1150fps (advertised at 1200fps). 8.3gr Longshot gave 1180fps and was accurate. 8.6gr Longshot gave 1215fps and was accurate. Recoil is totally manageable, I would say more pleasant than full house 357 mags out of the standard 4" GP100.
Both my loads appear more accurate than the Buffalo Bore load, and they are both faster. Again, more testing is needed.
I'm considering trying 9gr Longshot since I can seat the bullet so much longer for the revolver. Zero pressure signs with any of these loads, but looks like it can be tricky to see pressure signs in a revolver so not sure. I may buy another disk for the thrower and ream out the hole in the auto disk so it will throw 8.8 instead of 8.6 and try that.
Appreciate everyone's input. Still curious to know what anyone else is doing.
Update #2:
Accuracy tested a bit today. I'm rusty and not the best shot with a handgun. I'll get better. I need to shoot more.
.
8.1gr Longshot seated 1.358" had the best accuracy at 1120fps
8.6gr Longshot seated 1.358" had decent accuracy with 1215fps
8.3gr Longshot seated shorter at 1.285" gave decent accuracy at 1220fps
8.6gr Longshot seated 1.285" gave decent accuracy at 1260fps
Buffalo Bore factory load gave piss poor accuracy at 1150 fps
Accuracy (with me shooting) was decent at all of my loadings. Disappointed in the Buffalo Bore stuff, but it is seated at around 1.25" I believe for autos so that may be the difference.
Even with a pretty good crimp, I'm getting a little bullet jump when using moon clips. When I don't use moon clips it's much better. Accuracy didn't seem to suffer without them. I'll probably put a touch more crimp this next go around
Another fun fact.I also shot my Smith 686 4" 357 loaded with 13.7gr 2400 under a 158gr LSWC. This load gave 1250fps and pretty stout recoil. Comparable to the 10mm 220gr at 1200fps. Perhaps not as much overall but it's sharper than the 10mm. The 10mm has a slower recoil more like a mid-range 44mag load or Taffin 45colt load. I have never been a fan of full house 357 loadings because the recoil is so sharp (this is probably closer to a mid-range load). Ballistically this 10mm 220gr load moving at 1250fps smokes a 158SWC at 1250fps, and out of a similar platform is more enjoyable to shoot. Certainly not worse. I am already happy with what this pistol is doing, and I think it will only get better as I play with it more.
I have not handloaded for it, but have fired the Doubletap 200 gr in my Kahr MK40 in 40 cal. They fire fine and are reliable, but the cartridge is too long to eject a live round without ejecting the magazine and letting the round fall down the mag well. It is something you should try.
The reason I chose 220's is because they can be shot at the same speed as 200gr and I want the maximum performance the cartridge will give me. If we can move both bullets at the same speed, I'll take the heavier.
What makes you think 220gr bullets can be pushed as fast as 200gr? Unless maybe you're loading the 200gr down lighter?
That was in response to the posts just before that saying I can push a 200gr at 1200 so why not just do that. The answer, is because I can push a 220gr at 1200.
I'm sure I can push a 200gr closer to 1300 but we'll see. Looks like most guys are only getting 1200-1250 with 200gr bullets from their Glocks. I agree I should be able to push them faster, but very limited research online looks like maybe not.
'
Also, top end factory offerings for 200gr is 1250fps and top end 220gr offering are advertised at 1200fps. Most people call that the same effective velocity.
You absolutely can push a 200gr faster than a 220.
I've loaded 1000 or so 200gr double tap and xtp 200s with Longshot. Bluedot is,worthless if you ever shoot in low light.....it's muzzle flash is enough to make follow up tough.
I've loaded 1000 or so 200gr double tap and xtp 200s with Longshot. Bluedot is,worthless if you ever shoot in low light.....it's muzzle flash is enough to make follow up tough.
Yeah, Blue Dot makes some impressively large fireballs. Try 43-45 gr of it behind a Lyman 12 gauge slug sometime for some good entertainment.
Power Pistol makes a lot of flash in the 10mm as well, as does 2400 but it's pretty useless in the 10mm anyway.
#9 and #7 on the other hand produce relatively little flash. I'm ashamed to say I haven't checked the flash of Longshot yet, all my 10mm loads with it were shot in the daytime. How is it for flash?
I know what you mean though about "if you ever have to shoot in low light". I used to think that was overrated, until I took a shot at dusk when handgun hunting with a 45 Colt Blackhawk (IIRC I used a 280 or 310 gr WFN and a full charge of H110). Before I shot, light was fading but still plenty to see the deer, probably 15 min before last shooting light. After the shot though, it was like I'd been staring into the sun; I honestly couldn't see the deer at all and had to just listen where it went. I try to use low flash powders for most hunting loads now, although I don't worry about it for target loads.
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
Agreed, I shoot 200gr XTP's at 1200 fps in my DW 10mm with Longshot, were I to need a hardcast it'd be of the same weight and relative same speed, don't know what it wouldn't penetrate, would have to be a digger and may even shoot to the sights.
Couple things. This is a revolver with adjustable sights, so recoil springs and point of impact not an issue whatsoever.
The reason I chose 220's is because they can be shot at the same speed as 200gr and I want the maximum performance the cartridge will give me. If we can move both bullets at the same speed, I'll take the heavier.
The appeal of this particular pistol to me, is the idea of a 6 shot L-frame revolver that is set up for moon clips, that will outperform a 357 without more recoil. Kind of a niche market, I understand, but I like it.
An update, I shot some loads yesterday. More testing is needed, but;
Buffalo Bore 220gr Hardcast shot 1150fps (advertised at 1200fps). 8.3gr Longshot gave 1180fps and was accurate. 8.6gr Longshot gave 1215fps and was accurate. Recoil is totally manageable, I would say more pleasant than full house 357 mags out of the standard 4" GP100.
Both my loads appear more accurate than the Buffalo Bore load, and they are both faster. Again, more testing is needed.
I'm considering trying 9gr Longshot since I can seat the bullet so much longer for the revolver. Zero pressure signs with any of these loads, but looks like it can be tricky to see pressure signs in a revolver so not sure. I may buy another disk for the thrower and ream out the hole in the auto disk so it will throw 8.8 instead of 8.6 and try that.
Appreciate everyone's input. Still curious to know what anyone else is doing.
10-4 on the adjustable sights, that'll work, was out in the load shop today waiting on the Wipeout to finish soaking in an old BAR 338WM, noticed I had a partial box of new Starline brass sitting on the bench.
Went and grabbed a box of 200gr XTP's, some longshot powder, then noticed I was out of WLP primers, so loaded 8.2gr longshot under five 200gr XTP's at 1.255" lit with CCI-350 primers and went to the chrono, the load with WLP's runs 1214 fps, the load with CCI-350's went 1219 fps, I was happy with that and loaded up the remaining 63 cases with that recipe, just throwing out an FYI.
BTW, brass was in a nice 2ft circle about 13ft off my right shoulder, and NO smileys.
Sweet. Was thinking about picking up a box of 200 XTP's myself and a can of AA#9.
I got another can of Longshot yesterday and ordered another 1000 220's from Rimrock. Like the loads I've got so far.
I expected much higher velocities with the mag primer, glad it remained the same, carried a shipping box out 20 yards and rested against a back porch post, yup, still shot to the sights, GTG, love those 200gr XTP's in 10mm, shot a big buck deer in the last rib, bullet pulverized the corner of the liver, chitcanned both lungs, exited offside ribcage, he walked 20 yards, stood there till he collapsed, those hardhead 220's over a stiff shot of longshot will be plows for dang sure.
It certainly hits the dinger pretty hard at 35 yards. Would love to shoot a deer with it.
Hope you get one before seasons gone, it was a blast using mine, I need to really make those 200gr XTP's do a little work by slamming a big hog up close.
I got to ask it, why mess with 220's. There seems to be a good number and styles of 200 grainers out there. If a guy stays with the 200 grainers you might not have stabilization problems, you might not have change the recoil spring, higher speeds, etc. I was just wondering what the benifets are is all. And I do appreciate trail blazers.
Agreed, I shoot 200gr XTP's at 1200 fps in my DW 10mm with Longshot, were I to need a hardcast it'd be of the same weight and relative same speed, don't know what it wouldn't penetrate, would have to be a digger and may even shoot to the sights.
Couple things. This is a revolver with adjustable sights, so recoil springs and point of impact not an issue whatsoever.
The reason I chose 220's is because they can be shot at the same speed as 200gr and I want the maximum performance the cartridge will give me. If we can move both bullets at the same speed, I'll take the heavier.
The appeal of this particular pistol to me, is the idea of a 6 shot L-frame revolver that is set up for moon clips, that will outperform a 357 without more recoil. Kind of a niche market, I understand, but I like it.
An update, I shot some loads yesterday. More testing is needed, but;
Buffalo Bore 220gr Hardcast shot 1150fps (advertised at 1200fps). 8.3gr Longshot gave 1180fps and was accurate. 8.6gr Longshot gave 1215fps and was accurate. Recoil is totally manageable, I would say more pleasant than full house 357 mags out of the standard 4" GP100.
Both my loads appear more accurate than the Buffalo Bore load, and they are both faster. Again, more testing is needed.
I'm considering trying 9gr Longshot since I can seat the bullet so much longer for the revolver. Zero pressure signs with any of these loads, but looks like it can be tricky to see pressure signs in a revolver so not sure. I may buy another disk for the thrower and ream out the hole in the auto disk so it will throw 8.8 instead of 8.6 and try that.
Appreciate everyone's input. Still curious to know what anyone else is doing.
10-4 on the adjustable sights, that'll work, was out in the load shop today waiting on the Wipeout to finish soaking in an old BAR 338WM, noticed I had a partial box of new Starline brass sitting on the bench.
Went and grabbed a box of 200gr XTP's, some longshot powder, then noticed I was out of WLP primers, so loaded 8.2gr longshot under five 200gr XTP's at 1.255" lit with CCI-350 primers and went to the chrono, the load with WLP's runs 1214 fps, the load with CCI-350's went 1219 fps, I was happy with that and loaded up the remaining 63 cases with that recipe, just throwing out an FYI.
The WLP is a magnum equivalent primer, so same, same.
Thanks JWP, good to know, I've always thought it was a standard large pistol primer.
Thanks JWP, good to know, I've always thought it was a standard large pistol primer.
Look at the label on the WLP primer box. "For Standard or Magnum Pistol Loads"
Thanks JWP, good to know, I've always thought it was a standard large pistol primer.
It is, but is hotter than most std, non-mag LP primers.
DF
Must not forget the extremely hot Magnum Remington 2 1/2 Primer.
Must not forget the extremely hot Magnum Remington 2 1/2 Primer.
Doesn’t say magnum on the box.
You saying 2 1/2 Rems are as hot as W/W WLP?
DF
Good time for another update if you have it please, huntinaz.
I haven't done much loading yet, but did find the 220gr Underwood load to be accurate and still pleasant to shoot. Advertised 1200fps. I'm getting pretty consistent 50-70 fps less than advertised with factory loads in 180, 200, and 220 grain slugs in my 4.2" Match Champion. Reliable load info is indeed still scarce for the heavies.
What’s the best source for 220 gr. hard cast bullets?
DF
I have a bunch of the Rimrock 220's but have yet to try them or much of anything else out of the 5" GP, other than 180gr hardball. One of 1000 things on my to-do list. I did find some data that McNett posted on GlockTalk.
https://www.glocktalk.com/threads/alliant-powder-data.179347/#post-1852538![[Linked Image]](https://photos.imageevent.com/newfrontier45/sixgunsv/large/GP%2010mm.jpg)
Is that grip Spalted Maple?
Looks nice.
DF