Home Forums Reloading Big Game Rifles Need 45/70 Loading Data

I need loading data for 45/70Govt. using Hornady 350gr FP bullets and H4198 powder. The ammo will be used in a Marlin 1895. Thanks in advance.

You should be able to substitute the FP for the RN in these loads from Hodgdon #27.

Marlin 1895 45-70 24" barrel
350 grain Hornady RN seated to 2.54" COAL
Winchester brass, 2.1" trim
CCI 200 primers
48.5 grains H4198 START 2036 fps 32,200 CUP
54 grains H4198 MAXIMUM 2191 fps 39,300 CUP

Jackfish
Thanks alot. I have be choppin at the bite all day to get started loading for my new toy. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

You can also try the 405 grain Woodleigh Weldcore over 50 grains of H 4198 for 2050fps which was chronographed in the Cowboy version with 26 inch barrel.

AGW

I have recently been working with the 45-70 and 300gr nosler partitions. Here are my results with IMR4198 and 210 primers

41gr 1.2" groups
43gr 1.4" groups
45gr 1.4" groups
47gr 1.6" groups with occasional flyers
49gr 3" groups (vertical stringing)
51gr 4-5" groups (vertical string)

I have not chrono'd yet. I was expecting better performance after 45gr. But it just doesn't do that well past there. I figure I am kicking little below 2000fps with 45gr, which I can deal with. I wished I started out with 3031 or RL powders.

With 300-grain bullets, you might want to try Accurate Arms 2015. I found it accurate. I have heard that Nosler found it most accurate with the 300-grain partitions.