April 15, 2005
March 31, 2009
It’s just that I haven’t found a smokeless powder that works for me in my 45-90’s. My theory is that big case just has too much empty space with any reasonable charge of smokeless powder. To be quite honest I haven’t tried an 1886, only a couple of Sharps rifles. It simply be my BP bias, hard to say. 😉 I think the 1886 has a slower twist than the Sharps but that is likely the difference between an express rifle and a buffalo gun.
Mike, I put a wad of toilet paper over the powder just long enough to touch the base of the bullet after it is seated. This keeps all of the powder down at the primer.
Bert, I use 31 grains of 4198 for 1,540 fps. 25 grains of 4759 is about the same. 3031 is not as accurate as the other two, in my guns. These are all 10 shot chonographed loads.
November 7, 2015
Bert H. said
I suggest loading the 45-90 with IMR 4198, start with 34-grains and work it up to the original factory velocity.
Thanks, Bert. I think you’ve shared that with me before but I haven’t got around to trying it. Used 4198 in 45-70 when I was trying to duplicate Hornady’s LeveRevolution ammo but that’s a whole ‘nuther topic. My current 45-90 load is a Lyman 457125 over a lightly compressed load of Swiss 1 1/2 fg. Still looking for a Winchester to try it in.
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