Shiloh Rifle Forums

In the for what it is worth department, Rick Moritz told everyone he is beating them with a 12 twist Green Mountain barrel.

As for chambers, the best paper patch shooters have 45ﾟ beginnings to their throat.

You guys that want to tell Ian how to throat his rifle need to beat him 1st.

Good luck with that..

ian45662 wrote: ↑Wed Sep 30, 2020 3:49 am

beltfed wrote: ↑Tue Sep 29, 2020 4:21 pm ian,Glenn,
Nothing wrong with GM barrels, but
If you want to try the 371360E, 360 grain bullet I believe you are better off with a 10 twist barrel.
My 10 twist shoots the 371345E 345 gr bullet AND the 371360E 360 well. But, So far, in my 10 twist Douglas,
the lighter , shorter 345gr bullet has actually turned in smaller groups than the 360gr
beltfed/arnie

. When you ordered your 10 twist did you get it as a blank or did you have them profile it? What outside diameter and length do I need in order to make weight for sillywets?

My 38-56 C. Sharps High Wall made weight by about an ounce with a 32" long #3.5 profile GM barrel. It will depend on the density of your wood. I found no advantage to 32" and would go with a 30" barrel (which I'm doing at the moment).
There is no great difference between all the good barrel makers these days. They all occasionally make a bad one, but quite rare. If you want octagon, get the GM (my new barrel is one of the 'X' models) and save a bunch of machining.
My personal opinion is you do not need a 10" twist for the 360gr BACo or, as Harlan has posted, even with a 372gr bullet. I shot the BACo 360gr GG bullet (same length as the BACo 360gr PP bullet) in a 13" twist and it makes round holes in paper at 600yd, just like my 38-55 does at 600yd with the same bullet.

30” would be good for me. I would like the rifle to be as close to 12 pounds as possible. In terms of GM would I need the 3.5 profile or the 4 profile to accomplish this?

ian,
I bought the Brg with Douglas 38-50 barrel from another BPCR shooter.
It was originally rebarreled for a friend down south "under the auspices of Dan T",
by Mike Lewis. I don't know if it was Douglas or Mike Lewis that "octagoned" the barrel.
The contour is a full length Octagon, 30" with same dimensions as the original Brg Half octagon,
but extended full length. Breech is 1.148" across flats and muzzle is 0.968 across flats.
The rifle weighs 11 pounds 11 oz with Hoke tang sight and Lee Shave front globe.

beltfed/arnie

Glenn,
Yes, you may indeed get sufficient stability out to 600yds with the longer 360 grain bullet
and a 12 twist barrel. Hopefully including enough stability if conditions get "twitchy" …
If you figure you Need added weight over the DDEPP 371345E bullet, we can design a bullet
that is still 1.4" long, but with a slightly shorter "fatter" ogive/nose such that you will get that longer body
you want to reach the longer leade in your barrel.
That worked very well for Jim Kluskens/Distant Thunder for his 18 twist 40-65 for Silhouette.
His bullet is rather blunt, DDPP, and only 1.25" long, but 380 gr or so. Works well, stabile out to 500 meters/600yds
and only "cost" a small increase in drop and wind deflection which he could handle.
beltfed/arnie

Glenn,
Yes, you may indeed get sufficient stability out to 600yds with the longer 360 grain bullet
and a 12 twist barrel. Hopefully including enough stability if conditions get "twitchy" …
If you figure you Need added weight over the DDEPP 371345E bullet, we can design a bullet
that is still 1.4" long, but with a slightly shorter "fatter" ogive/nose such that you will get that longer body
you want to reach the longer leade in your barrel.
That worked very well for Jim Kluskens/Distant Thunder for his 18 twist 40-65 for Silhouette.
His bullet is rather blunt, DDPP, and only 1.25" long, but 380 gr or so. Works well, stabile out to 500 meters/600yds
and only "cost" a small increase in drop and wind deflection which he could handle.
beltfed/arnie

Zack, I believe Dan referred to a 35-40 as the gnat Mauler
Keith Lay

Tasmanian Rebel wrote: ↑Wed Sep 30, 2020 9:03 am Zack, I believe Dan referred to a 35-40 as the gnat Mauler
Keith Lay

Doc - believe you are correct. If memory serves, Steve Baldwin had some BPCR success shooting a 35-40 with a 350gr bullet, though am not sure he still campaigns same.

Here is what I found on the 35 caliber and Dan
https://www.shilohrifle.com/forums/view ... hp?t=18394
Short lived apparently.

HG

Thanks Doc, I remember him using the term associated with a sub caliber rifle for silhouette.

A friend is winning matches with his Mike Lewis 35-40. My CPA's 38-50 barrel is a 12 twist Douglas and I'm shooting a 360 grain Dan Theodore design micro mini groove by Paul Jones.

CW, that was the same bullet that was shot in my rifle and was very accurate but would always foul out, lead up. Previous owner had the same problem and I thought it was his method of fouling control. After I acquired the rifle and mould I tried wiping with bore critters and other variations of wiping, I never could tame the fouling. I moved to a Buffalo Arms bore diameter pp mould and solved the fouling problem but it was not as accurate. That is what caused me to set it aside a few years until the DDPP came along. Everything is back on track now. Maybe it was something with the barrel. Has fouling been an issue with your 38-50? What do you do for fouling control?

HG

Was talking to Ron Calderone Saturday past at a silhouette match and he mentioned that bore fouling buildup was a problem in his 38-50 Hepburn.

FWIW On that day he was shooting a 45-70. Noticed that I had not observed the other 38-50 shooters in our group showing up on match day with their 38-50's.

Fouling was a definite problem when shooting greasers. I only met Dan T a couple times at Bogue Chitto shooting midrange BP. He brought his new
38-50 RH one trip and was doing incredibly well til the last 20 shot relay @ 600 yards. I was in the pits and saw it go south real fast, later he said the fouling got out of control. Pretty sure he was shooting the .38 money bullet design. Fouling has not been a problem with paper patching. I'm sure wind will be a problem. That is what I need to work on with all calibers and this low recoil rifle is fun to shoot after I put the big ones away. It's mostly about the chase.

HG

Never fouled up. I wipe between shots with a damp (NAPA cutting oil mix) Arsenal patch on a nylon brush then bore mop the chamber. Never leaded either. White Lightning lube.