Home Forums Hunting & Shooting BPCR Paper patched

Oh boy, you really did get bit by the BPCR bug, didn't you?

E.T. is grinning from ear to ear!

It's OK, you're among friends...

Ed

sounds like I'd have to sell some stuff now

but choice is limited here, only Pedersoli.

I'm in the selling mode here as well.

Looking for a Shiloh Sharps Roughrider with a 30" heavy barrel in .45-70.

That is based on advice I have received from VERY knowledgeable input here and my preference for that cartridge.

If I can't have that, there's nothing wrong with a Pedersoli! Greg let me shoot his 1874 based on a Pedersoli action with a Badger barrel and I could be VERY happy with that combination, too!

I've been slowly collecting the bullet casting and size/lube equipment since my "BPCR Clinic" that Greg held earlier this year at his place.

All the best to you, sir!

Ed

have to check some questions before making a decision, including legal questions related to caliber power ....

I'm looking for datas about energy performance of the BPC calibers.

but I grew up in BP smell and those rifles just allow to have it in the nose in a convenient, classical and powerful hunting package

All the best to you too.

YOu can go to this website and punch in whatever numbers seem about right to you. The energy estimates well be very close if your input data are about right.

http://www.jbmballistics.com/cgi-bin/jbmtraj-5.1.cgi

For a hunting .45-70 figure something on the order of a 450 gr bullet, which has a Ballistic Coefficient of about 0.4 and a muzzle velocity of about 1200 fps. You actual load and bullet will differ slightly of course, but these will tell you if you are in the ballpark or right on the edge.

Thanks.

If the 45-70 is too close to the 2200 j @100 m limit maybe the 90 or the 110 ...

You will be short. Quite a bit short. I don't think too many buffalo rifles will make the grade either. What's the limitation all about? Hunting elephants? In France?

After playing around some, I has some doubt that even a .45-110 will get the job done. Must be extra tough critters over there.

general legal minimum limit for big game in South Belgium. Only for roe buck stalking, the limit is lower: 970 j.

conversion gives :

2200 j = 1622 ftlbs

970 j = 715 ftlbs

modern 45-70 is ok but 30-30 is not

45-70 is not going to hack the 2200j limit.

The rule is pretty nuts. But then I suppose you knew that. .30-30s kill damn well too.

sure ? 325 grains ftx reach 2158 ftlbs / 2926 joules @ 100 yards

325 ftx at that speed is probably a smokeless load, I don't really know, but that's my guess.

I'm working with 1200 fps muzzle velocity, 450 gr bullet and a BC of .4 (fairly optimistic). that gives 1212 ftlbs @ 100 m.

You can up the velocity probably )and maybe even with a slightly heavier bullet). But to get to 1622 ftlbs at 100 m, you need 1340 fps, 500 grs and the same, still a bit optimistic BC. Sure it is doable, but it won't be simple.

Is anyone really going to know or check? Your bullet will go end-to-end in any game animal you have, even at the low velocities.

IIrc Jim gets 1400 fps with the 450 grainers in 45-110 and 1200 fps with the 540 grainers.

I'm sure it will kill anything I could hunt but I don't want the gun to be confiscated because of some law break.

a 110 may make is up that far, but the 70 will be just about impossible and many 90s and 100s may have problems depending on powder used and type of loading and bullet.

A 45-110 will make that energy requirement with no problem. I loaded a duplicate load to one of Selous'African loads of a 360 grain hp paper patched bullet over 100 grains of 2f KIK and it went 1598 fps over my Oehler chronograph. My 45-110 also goes 1410 fps with a 500 grain paper patched bullet and 106 grains of KIK 2f. I don't know what this is in joules, but it should be somewhere in the ball park.

My 45-70 goes 1457 with a 340 grain Gould hollow point and 70 grains of Goex 3f. Using 3f Swiss will add 25 fps or so to that. I have a very accurate load with a 419 grain paper patched bullet and 73 grains of KIK 3f that goes 1284 fps.

The 45-70 probably won't make the power factor, but the 45-110 should get the job done. If it won't, there's always the 45-120, and I think Pedersoli still offers one.

Good luck.

Could a .40-65 be rechambered to either. 40-90 straiggt or. 40-90BN and who would be a good smith to do the chambering to shoot ppb?

A 40-90 bottleneck reamer should clean up a 40-65 chamber, I'm pretty sure a 40-90 ss is to small at the case head if staying with a ture 40x3 1/4
Who the gunsmith is doesn't make the paper patch chamber, the reamer design determines the "paper patch" chamber.
Visit with Crossfire about the rechamber job, they don't make bpcr smiths much better than he...

You really should leave that 40-65 alone. It is a really good hunting/target rifle as is and a lot more versatile and easier to live with than one of the big forties. There is a reason you don't see a lot of 40-90 and 40-82 rifles on the firing line at matches.

You are probably right. I just have to tinker. I will try some paper patch and the grease grooves and see what shoots the best. I might just go ahead and order a Shiloh the way I want it and be done with it

I am going to order some of the paper patch bullets from Buffalo Arms to try. Would the .395 be a good start?