40-70 SBN

Discussions of powders, bullets and loading information.

Moderators: Kirk, Lucinda

Post Reply
SBR4590
Posts: 24
Joined: Fri Oct 29, 2021 4:30 pm

40-70 SBN

Post by SBR4590 »

I read a few accounts of the 40-70SBN being dropped because fired case were sticking in the chambers. I own an original 1874 Mid range #1 in 40-70 SBN. I haven't experienced any sticking or accuracy issues as is generally talked about. Were the cases made of copper back in the day? As for accuracy, with a relatively slow 20-1, twist one can only use up to a 350 grain head. Heavier / longer bullets won't stabilize. I shoot 330 grain PP bullets and accuracy is 2" @ 100yds. Not too shabby for an old smoke pole.
Thanks. Frank.
NYC.
bobw
Posts: 3616
Joined: Tue Nov 23, 2004 12:52 pm

Re: 40-70 SBN

Post by bobw »

Frank, nothing wrong with the 40-70 2.25" SBN. It was the standard chambering of the Mid Range Target rifle during the Hartford years. When Sharps moved to Bridgport Conn. they changed to the 40-70 2.5" Sharps Straight cartridge as the standard chambering. Today brass is as easily available as 45-90 which can be formed into 40-70-2.25" SBN. Enjoy your piece of history. Bobw
bobw
ndnchf
Posts: 257
Joined: Mon Aug 11, 2003 4:03 pm
Location: Virginia

Re: 40-70 SBN

Post by ndnchf »

FWIW - I bought my Shiloh .40-70bn new 32 years ago. I've never had a case stick in the chamber. I'm not a competitive shooter, just a plinker. My eyes aren't what the used to be, the rifle can shoot better than I. I have no regrets.
Steve
You do not have the required permissions to view the files attached to this post.
Never trust a man who wears both suspenders AND a belt.
Yellowhouse
Posts: 516
Joined: Fri Jun 03, 2011 2:27 pm

Re: 40-70 SBN

Post by Yellowhouse »

Aren't Shiloh 40-70's 1 in 18 twist?
Sam
Kenny Wasserburger
Posts: 4605
Joined: Tue Sep 24, 2002 3:53 pm
Location: Gillette, Wyoming

Re: 40-70 SBN

Post by Kenny Wasserburger »

16 twist I believe is the standard.

KW
We'll raise up our Glasses against Evil Forces, Singing, Whiskey for my men, Beer for my horses.

Wyoming Territory Sharps Shooter
bobw
Posts: 3616
Joined: Tue Nov 23, 2004 12:52 pm

Re: 40-70 SBN

Post by bobw »

My 40-70 bn was made in 1988 is 1 in 18 and shoots 370 gr ppb's fine. Bobw
bobw
steveu834
Posts: 23
Joined: Wed Mar 25, 2020 12:42 pm

Re: 40-70 SBN

Post by steveu834 »

My early 90’s 40-50 sbn has a 1-18”.
Fwiw,
Steve
Dan O
Posts: 723
Joined: Sun May 01, 2005 3:05 pm
Location: Great Falls Montana

Re: 40-70 SBN

Post by Dan O »

I have 2 40-65 Shiloh's one is 1-16 made in 2004 the other built in 2020 was ordered 1-14 1/2. The standard is 1-16 with the 1-14 1/2 optional. I think this the standard for the 40 calibers currently.
Clarence
Posts: 2127
Joined: Tue Dec 24, 2002 7:38 pm
Location: Hill Country, TX

Re: 40-70 SBN

Post by Clarence »

My .40-65 was made in 1996 (serial # in the B4900-B5000 range). When I ordered it, 16" twist was an option; by the time it was made, 16" was the standard twist.

Clarence
User avatar
desert deuce
Posts: 3517
Joined: Mon Apr 14, 2008 10:51 pm
Location: Rio Rico, Arizona

Re: 40-70 SBN

Post by desert deuce »

Seem to remember the bullets for the original 40-50 ctgs were 165 grains and for the 40-70 SS were 330???
Sometimes you get the chicken, and sometimes you get the feathers!
bobw
Posts: 3616
Joined: Tue Nov 23, 2004 12:52 pm

Re: 40-70 SBN

Post by bobw »

Both your 40-50 1 11/16" SBN and the 40-50 1 7/8" SS used the 265 grain paper patched bullets. The std factory loads for the 40-70 2 1/4" SBN and the 40-70 2.5" SS featured 330 gr paper patched bullets. The 40-90 2 5/8" SBN was loaded std with 370grain paper patched bullets. Bullets of other weights were availible as well as loaded ammunition on special order. This information on all Sharps cartridges is in Frank Sellers "Sharps Firearms ". bobw
bobw
User avatar
desert deuce
Posts: 3517
Joined: Mon Apr 14, 2008 10:51 pm
Location: Rio Rico, Arizona

Re: 40-70 SBN

Post by desert deuce »

265 is correct, punched the wrong key.
Sometimes you get the chicken, and sometimes you get the feathers!
Post Reply