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Long Guns => BPCR Reloading => Topic started by: mazo kid on December 23, 2016, 01:56:36 PM

Title: Loading for 45-70 collar button bullets
Post by: mazo kid on December 23, 2016, 01:56:36 PM
I have had the mold for a while and cast up some bullets with it. Decided to load a few cartridges as I have found the original "gallery" loads that the troopers used in their Trapdoors for indoor target practice.
(https://c7.staticflickr.com/1/653/31439592110_958f6167c7_z.jpg)
Title: Re: Loading for 45-70 collar button bullets
Post by: mazo kid on December 23, 2016, 01:58:48 PM
These are a low velocity, zero recoil load.
(https://c6.staticflickr.com/1/575/31812198245_295e43e8fc_z.jpg)
Title: Re: Loading for 45-70 collar button bullets
Post by: mazo kid on December 23, 2016, 02:04:26 PM
This is what the bullets look like; I think the original mold didn't have the square lube groove. It was rounded. This bullet was developed to replace the .457" round ball that had previously been used for practice in inclement weather. It gave 2 bands for better rifling grip and better accuracy.
(https://c5.staticflickr.com/1/772/31439755780_b8a8df57b1_z.jpg)
Title: Re: Loading for 45-70 collar button bullets
Post by: Captainkirk on December 23, 2016, 06:26:13 PM
What is the grain weight of those?
Title: Re: Loading for 45-70 collar button bullets
Post by: mike116 on December 23, 2016, 06:38:56 PM
What is the grain weight of those?

Should be around 145 grains.
Title: Re: Loading for 45-70 collar button bullets
Post by: Captainkirk on December 23, 2016, 06:47:30 PM
Wow...I bet they will scat right out of the muzzle with 8 grains of Unique or Bullseye!
I load my 44RM handloads with 10.5gr of Unique behind a 240gr slug and they ain't just chicken feed!
Title: Re: Loading for 45-70 collar button bullets
Post by: mike116 on December 23, 2016, 08:53:49 PM
I think the original Trapdoor gallery loads were 8 or 10 grains fffg.
Title: Re: Loading for 45-70 collar button bullets
Post by: mazo kid on December 27, 2016, 01:47:04 PM
My latest issue of "BPC News" has an article on this subject written by Mike Nesbitt. He says the troopers used 5 grains of black powder in their collar button gallery loads. He loaded some up with 7.5 grains of OE fffg powder and got about 430 fps velocity in his C. Sharps 1874 rifle. He then loaded some up with 10 grains of the same powder and got 559 fps. This powder was loaded loose in the case! I found a load of 5 grains of Unique in an old Ideal Handloading manual; that load gets out there at 900 fps!
Title: Re: Loading for 45-70 collar button bullets
Post by: scooby on December 28, 2016, 07:35:15 AM
That is a very neat source of entertainment. Something I could see myself doing. I have thought about loading up the round ball for a gallery load. Makes me want to pI'll my trapdoor out.
Title: Re: Loading for 45-70 collar button bullets
Post by: mazo kid on December 31, 2016, 11:08:54 AM
The .457"  round ball was used for the gallery load before it was replaced by the collar button bullet, which was more accurate by virtue of the 2 bands to better grip the rifling.