40-72

This is the general discussion area for the forums at BPCR.net. Anyone who appreciates and enjoys the classic single shot rifles of the late 1800 period is welcome to take part here. Civility in all postings, and respect for your fellow shooters are the primary expectations of all members. Trolls will be removed from the membership without warning or recourse. The Forum owner has the final, and only, say in who is determined to be a troll. Please try to put your posts in the correct forum. (Example: loading tips and questions in the "Cartridge Loading..." forum.) Postings may be moved by the moderator to correct forums if he determines they can be better placed.
bruce moulds
PostsCOLON 78
JoinedCOLON Mon May 04, 2015 11:47 pm

Re: 40-72

Post by bruce moulds » Fri May 19, 2017 3:34 pm

to soot long range with a 40, you need a bullet 440 to 460 gns to keep up with a 45 with 540 gn bullets.
100 gns less bullwt wt = less recoil.
yes the odg liked the 40 for mid range, but their twists only allowed bullets of about 330 gns max.
this is where to 40/72 shines.
it works well mid and a long range for sil and targets.
you just have to do the homework on loading it.
brent and don, we will just have to agree to disagree on this one
as the French say, "vive la difference"
keep safe,
bruce.

Brent
PostsCOLON 1523
JoinedCOLON Sun Nov 20, 2005 9:12 pm
LocationCOLON the most boring real estate west of Illinois

Re: 40-72

Post by Brent » Fri May 19, 2017 4:43 pm

It got lucky a few times but I'd not say much more than that. :)
I'm not from here, I just live here.

Kurt
PostsCOLON 615
JoinedCOLON Mon Nov 21, 2005 8:05 am

Re: 40-72

Post by Kurt » Sat May 20, 2017 12:47 pm

I think I will chop off 4" on the #1 40-70 Shiloh and get it down to Silhouette weight. I used to shoot that rifle a lot for the gong shoots and it shot well at long range, but with the 16 ROT using the long nosed pointed bullets the rifle accuracy did not impress me at all. GG or PP.
But if I use a bullet with the blunter nose like a postell or even the blunter nosed Brooks Creedmoor this rifle will shoot well using a 420 gr postell nosed GG or PP bullet out to 1100 yards on the Shiloh range and the 1K Alliance Nebraska range even in the unpredictable winds on that range. I might be making a mistake taking 4" off that 34" barrel but maybe I will shoot it more for the silhouette games using the original Sharps round nosed PP bullet I have a adjustable mould for and I opened that mould to a 435 gr and it will hold the 1K target in fine shape.
The bullet profile has a lot to do holding stability when you start lengthening it.
My .50, I shoot a 1.5" bullet with it's 1/22 ROT and it does very good shooting that 718 gr torpedo. :D
Kurt
These are the bullets that work the best in my .50
Image

6mmintl
PostsCOLON 5
JoinedCOLON Sat Dec 12, 2015 8:52 pm

Re: 40-72

Post by 6mmintl » Wed Jun 21, 2017 10:04 pm

I have a 40-72 with 1x13 twist silent match grade sstl barrel. My friend Marion Saltzman and another gent have our three guns smithed by Mike Lewis.

Unfortunately I have not been able to shoot it much after a heart attack.

Mine is on a browning 1885 hi wall action, I have 500 pcs Hornady brass and shoot the Paul Jones 430 money bullet.

If interested i would sell it
Frank Ambruso

Phoboga@att.net

timberlake
PostsCOLON 68
JoinedCOLON Mon Nov 21, 2005 6:54 pm

Re: 40-72

Post by timberlake » Tue Sep 19, 2017 6:44 am

I've got a roller with a 13 TWIST Lilja 30 inch barrel. Cal 40-82. I've been shooting a pp 452 grain Paul Jones bullet wrapped to .404. Chamber throat has been relieved a bit to .405. Bumps up to .408. Very accurate combination at shorter ranges. Using 82 grains of powder, I am hard pressed to get 1230 fps out this load. Tried numerous times. On a relatively quiet day, performance at 1K line is disappointing, meaning, it's hard to stay on target. I think I'll set this rifle aside and go back to a .45. 40's are just a distraction.

bruce moulds
PostsCOLON 78
JoinedCOLON Mon May 04, 2015 11:47 pm

Re: 40-72

Post by bruce moulds » Mon Sep 25, 2017 3:54 am

i have been shooting a 45/2.4" recently, having shot out the 13 twist barrel in my 40/72.
there is no real difference in accuracy or wind deflection between both guns.
around 83 gns of 1.5 swiss gives the 440 gn elliptical 1300 fps, the same as the 540 gn money in the 45 with 90 gns of same powder.
fast twist 40s are not a distraction if you use the right bullet and learn to load and shoot them.
keep safe,
bruce.

semtav
PostsCOLON 220
JoinedCOLON Sun Sep 27, 2009 3:07 pm

Re: 40-72

Post by semtav » Sat Oct 07, 2017 10:24 pm

Duckman wroteCOLON
Wed May 17, 2017 12:29 pm
Thinking about a big 40. Interesting 40-72 Steve Earl Wesson on gunbrover. Any thoughts
On 40-72 based on the 405. 40-72 vs 40-82 or 40-90. New to bpcr. Any opinions helpful. Thanks.
Obviously the original poster never came back.
But I'd lean toward the 40-82. maybe 14 twist, altho my 16 twist rechambered Browning is very accurate with a 400 gr Brooks bullet.
I've been tasked to wring out the 40-65 Browning and see how well I can get it to perform at long range in the next year, so that's all I'm going to be shooting for a year.

bruce moulds
PostsCOLON 78
JoinedCOLON Mon May 04, 2015 11:47 pm

Re: 40-72

Post by bruce moulds » Sat Oct 07, 2017 11:17 pm

brian, the yardstick is 45 cal.
if you want to play the game with the 45, anything slower than 14" twist anf a bullet to suit puts you in the back seat.
the 400 gn kidwell bullet seems like a good greaser for 14 twist barrels.
13" twist seems to handle 1.5" long bullets absolutely reliably, which translates into about a 440 gn bullet with a reasonably low drag elliptical nose.
to use a 1.55" long bullet in absolute safety will take a 12" twist.
modern 40 cal long range sniper chamberings currently seem to favout 13" twists, making them more readily available for bpcr rifles as well.
having just shot out my 40/72 13" barrel i was keen to try a 12", but have ordered another 13" due to ready availability.
shooting the 45/2.4" while the 40 is out of action is most interesting.
the 40 with an elliptical is proving to be better in the wind than the 45 with a money nose at the same muzzle velocity.
440 gn for the 40 and 540 gn for the 45.
a b.c. difference in favour of the 40 for sure.
not sure the capacity of the 40/82, but it would be in the ballpark of the 40/72.
one thing re 40/72 is just buy hornady brass and go shoot.
keep safe,
bruce.

semtav
PostsCOLON 220
JoinedCOLON Sun Sep 27, 2009 3:07 pm

Re: 40-72

Post by semtav » Sat Oct 14, 2017 9:07 pm

bruce moulds wroteCOLON
Sat Oct 07, 2017 11:17 pm
brian, the yardstick is 45 cal.
if you want to play the game with the 45, anything slower than 14" twist and a bullet to suit puts you in the back seat.


not sure the capacity of the 40/82, but it would be in the ballpark of the 40/72.

bruce.
obviously you mean "the 40"

Yea, I know the 16 twist is at a disadvantage. but that is what I get to work with.

I load 80 gr of swiss in my 40-82. its got a 16 twist barrel too, and makes an excellent mid range shooter

bruce moulds
PostsCOLON 78
JoinedCOLON Mon May 04, 2015 11:47 pm

Re: 40-72

Post by bruce moulds » Sat Oct 14, 2017 9:36 pm

sorry i did not give the clarity i thought i did.
what i was trying to describe was making a 40 compete in the wind with a 45.
it can do it with fast twist and bullets to suit, and sufficient powder capacity, against a std 45 setup.
not everyone's cup of tea, but interesting to an odd bod like me.
looks like the 2 cases have similar capacity.
my 40/72 loads are seated about 1/8" in the case.
how deep are your bullets down the necks?
keep safe,
bruce.

semtav
PostsCOLON 220
JoinedCOLON Sun Sep 27, 2009 3:07 pm

Re: 40-72

Post by semtav » Sun Oct 15, 2017 9:25 am

I got your gist. Guess you could use either 40 or 45 in that sentence and mean the same thing.
I seat my bullets .5" in case, but I'm shooting patched to groove. Could probably get 5-10 gr more in if I was seating that shallow.
would love to have a 13 or 14 twist 40-82 but I'm not getting to shoot that much any more so I doubt it is in the cards.

bruce moulds
PostsCOLON 78
JoinedCOLON Mon May 04, 2015 11:47 pm

Re: 40-72

Post by bruce moulds » Sun Oct 15, 2017 1:37 pm

sounds like the 40/82 holds more powder.
probably a better long range cartridge.
keep safe,
bruce.

BUTTON_POST_REPLY

Who is online

Users browsing this forum: 7 and 0 guests