Powder for .45/70?

TXTad

Active Member
24 grains of 2400 under a 405-grain cast bullet is probably in the top three world-standard universal load recipes on the planet.

Just got to throw my two cents in here, for my Handi 25 Colt carbine rechambered to 45/70, 12 grains of Unique and the 405 bullet is just right. For the 1990's short barreled Guide Gun, 24 grains of 2400 if a good load. The Trapdoor gets 55 grains of GOEX FFF and a greased wad under the 500 grain bullet. All are fun to shoot and will kill any wolf at the door issues.
What is the velocity with 24gr of 2400 under a 400 gr cast bullet?
 

popper

Well-Known Member
I was in a fancy and expensive LGS in Houston years ago. Racks of 45/70 rifles of all brands. Never did understand why Texans needed 45/70. Still don't. Buffalo are all gone, no Polar bears either. Marfa is a bad joke. :rofl:
 

fiver

Well-Known Member
you can go down to about 22-22.5 no problems.
the straight case takes Dacron well too..
24.5... LOL shoots good but it's on the doorstep of annoying.
 

Ian

Notorious member
:rofl:

I was never clear on the numbers, which was which, especially now that he's minus one.
 
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richhodg66

Well-Known Member
12-14 grains of Unique under pretty much any bullet from 300 to 450 has worked well for me. A grain or two more of Herco is nice too.
 

fiver

Well-Known Member
so your sayin BE-86 would work good too?


i'm down to numbers 2 and 3,, but it still feels like all three are here.
 

RicinYakima

High Steppes of Eastern Washington
24 grains of 2400 under a 405-grain cast bullet is probably in the top three world-standard universal load recipes on the planet.
Well, I won a CBA National Championship with that load in my Trapdoor. And with the Lee hollow base bullet cast from linotype.
 

Brad

Benevolent Overlord and site owner
Staff member
My 45-70 is fed a steady diet of a 420 gr cast bullet on top of 24 gr of 2400.
 

Thumbcocker

Active Member
I used to LOVE running my Ruger #1 in 45-70 to ridiculous velocities. This was my way even into early retirement.

The tip-over point came not so long ago when I loaded 100 cases with sufficient fuel to enable 350 grain Hornadys to go 2100-2150 FPS. There was a time in my life when I found such pastimes entertaining, and those lasted into my mid- to late-50s.

Good sense finally dawned upon me when the sensation of my right shoulder blade colliding with its left-side counterpart hit home. 15-20 of those at the end of a range session was quite enough, and it took almost a year's time to ration that recoil out over several range sessions to unload them through the muzzle. Having been raised in the Roman Catholic faith, I was cognizant of penance--so I knew it when I saw/felt it.

Ahem.

For some time I had been messing about with the 45/70 and WC-860 milsurp powders. Duplexed atop 6.0 grains if IMR-4198, 48.0 grains of this 50 BMG ball powder gives blackpowder ballistics to the Lee 405 grain bullet with about 1/16" of compression. 5-shot groups would cluster into 1.25"-1.5" at 100 yards pretty reliably.

Assembled together, all of the above constitutes what we called a CLUE at my old job site. 1250-1300 FPS even in that featherweight No. 1 still gave all-day recoil.....about like a 12 gauge trap load. Accuracy is sufficient for the critters usually sought using 45/70 rifles. In my present Marlin 1895, they are docile. I still have about 12# of that old $3.50/lb. milsurp stuff, so I'm set for a while. It works scaled down in the 38/55, too.

I have yet to scale this 6/1 powder ratio of WC-860/IMR-4198 to the 44/40, 32/20, or 25/20 calibers yet. I have tried the late Ross Seyfried's black powder-equivalent formula (BP grains x 0.4 of IMR-4198), and it worked pretty well. We shall see.
There is no substitute for experience, the trick is to survive getting the experience.
 

CZ93X62

Official forum enigma
Very true, sir.

And experience is defined as that thing you get when you don't get what you want, also.
 

Brad

Benevolent Overlord and site owner
Staff member
I have fired enough in the 1600+ range to know that unless hunting big stuff it just isn’t needed.