120 E-Tips perform great in the 26 Nos. My gun will go almost 1/2 MOA at 400 yds. (2 1/2"-3"). And with a 200 yd. zero, not that many clicks to be dead on at 400.
With 91 gr. 869, we're clocking around 3,450 fps. with 26" barrel, not leaning on it or pushing the pressure.
Double Tap ammo advertises their 26 Nos ammo with the 127 LRX at 3,600 fps. At almost a hundred bucks a box, I'll stick to handloading. Not sure how they're doing that, but would assume it's within SAAMI pressure limits.
I have in the 155 308 diameter. Amazing wound channel - have not recovered one yet, which is odd based on construction. it kils and passes through like a barnes
I have some of the 139 scenars loaded up with US869 (working up to 77.o gr) that I need to get to the range with. I was able to get 3,150 with RL-33 and 140 NABs. The 139 Scenar has a very short bearing surface.
The 139 Scenar is a super bullet. Shoots like a 140 Berger VLD, but is tougher.
IIRC, Rick (rcamuglia) tried WC-872 and I think US-869. He settled on RL-33 as the best .264 WM powder and he's burned a bunch of .264 powder. As you remember, RL-33 is similar to RL-17, made by the same Swiss company. It reportedly has a smooth pressure curve like RL-17.
Me, that's where I'd start with the .264 WM. With the 26 Nos, it's the other way around, 869/872 out perform RL-33.
DF
Yep.
I've found RL-33 to be the best powder in the .264 for velocity. I'm shooting the 139 Scenar at WARP SPEED
3400 seems to work well in Balistic AE for correct drops as far out as my scope will travel (1250 yards)
With the 100gr I use 72gr of H4831 The Sierra 100gr hp is 3691fps and the 100gr ballistic tip is 3709fps They hit hard and get there fast. Sierra takes 0.086 seconds to 100 yard target and still 3279fps and 2387ft lbs of energy, While the Nosler bullet is at 3382fps and 2540 ft lbs of energy and drops a hundredth of a second at 100yards. But then I step into the danger zone with the 160gr Woodleigh bullet at 3261fps. traveling 100 yards in 0.095 seconds and still at 3067fps and 3341ft lbs of energy. This is my Moose load.
The 130gr JLK VDL is 3226 fps with 73gr H570 zeroed at 300 yards mid range is 3.5 inches high and it is traveling at 2767fps with 2209 ft lbs of energy and takes 0.301 seconds to get there. I have not been able to find the RL33 powder to try yet no one in my area carries it.
Thanks for the info. I tried H4831 in my 6.5SLR today. I settled on 71.0 grains. Twice the velocity showed 3,750 fps with the GSCustom 106HV using Fed 215 Magnum primers. I guess the BC is about .485, but don't know exactly. Anyway this wildcat sure is close to the .264 Magnum in capacity.
"Only Christ is the fullness of God's revelation." Everyday Hunter
Sounds like a keeper. Keep the info coming and are you getting good groups with it? That sounds like a interesting bullet I had not heard of it. I have pushed the 85gr Sierra HP to 3830fps and it is accurate at that speed. That was with 73gr H4831. Also the 95gr Vmax with 72gr H4831 is at 3691fps I am thinking I can get to 73gr with it which should bump it up.
I loaded ten cartridges this evening and will try to get to the range Thursday or Friday morning. I plan to fire them at 300 yards. If they group under 3", I will call it good and start practicing prone with a bipod and twisting the turret.
"Only Christ is the fullness of God's revelation." Everyday Hunter
Range results from yesterday - first sunny day in eons, so I took the afternoon off and practically had the range to myself. Trying to stay on post in regards to the 139 scenar that the OP asked about.
Round robin (4 shot groups, 2 shot salvos, alternating bullets each time, 200 yds) accuracy trail w/ US869 and a few 139/140 bullets. Squirrely/gusty winds noted. T = 48F. All Fed 215 and Norma 7mm reformed, neck sized, 75.o gr US869. 1:9" twist, 25" bbl
139 Scenar (SD @ -0.030") v = 3,005 fps / group = 1.45" 140 NAB (SD @ -0.020") v = 3,020 fps / group = 2.55" 140 A-Max (SD @ -0.055") v = 3,010 fps / group = 5"
The 139 scenar smoked the other two.
Worked up to 77.o gr for 3,095 fps for pressure, but not groups. Need to start hoarding those scenars.
Next step would be to try some RL-33 and Retumbo with the Scenars.
I talked to a technician at Alliant yesterday and he told me that Rl 33 is made for large cases like the 300 ultra mag and 338 Lapua, he further stated that using it in the 264 is like playing with fire. He also stated that he heard of some actions getting stretched and guns being damaged by using RL 33 in a cartridge that it was not intended for, I think I am going to stick with Ramshot magnum and H 4831.
He did not say why but I am assuming that because RL 33 was developed for large capacity cases and Alliant did not do any testing in the 264 mag. If you want to use it in your 264 mag please do so and if it works well you might want to tell them, as for me I own a very nice pre 64 m70 264 and I plan on keeping it in one piece, is it worth that extra hundred feet per second to take a chance and ruin a good rifle and maybe hurt yourself, I think not.
He did not say why but I am assuming that because RL 33 was developed for large capacity cases and Alliant did not do any testing in the 264 mag. If you want to use it in your 264 mag please do so and if it works well you might want to tell them, as for me I own a very nice pre 64 m70 264 and I plan on keeping it in one piece, is it worth that extra hundred feet per second to take a chance and ruin a good rifle and maybe hurt yourself, I think not.
Those company types will often stick to the script and only talk about loads they've tested. To say that RL-33 is "playing with fire" in rounds other than what they have data for sounds more like something you'd hear from one of those behind the counter gunshop Ninjas who seem to know everything.
Serious .264 WM LR shooters have done some great stuff with RL-33, some saying it's the best powder for that round, period.
Check post here on the Fire for data and performance reports.
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