45-70 and IMR4198

Shooting 300gr Nosler partitions FN. Whats the heaviest load you would shoot in a modern Marlin 22".

[frizzellr]

Not sure on IMR 4198. I use 3031.

So frizz, whats the max load you would go with 3031?

I just called Marlin. I asked if garrett rounds were safe in 1895 Marlin 45-70. He said yes, but then when I asked the difference between 450 and 444 and 45-70 he tried to say there is a difference. I asked was it the lockup, or action, or what? He never would say, he just kept saying there is a difference. I gave up. But if Garrett rounds are safe, then I think it would be safe up to 50gr of 4198. Maybe I am wrong.

[Roskoe]

I have used 49.0 gr of IMR 4198 with a 300 gr. bullet in my 1895. Has serious recoil, but the load seemed OK.

[biggunz.45-70]

I use 49gr of imr-4198 ina federal case with a 300gr barnes original fp.
The gun is a marlin 1895ss 22" barrel. I get 2175 fps with this load.

Wow, thats cookin.

[frizzellr]

bigcountry, my load data for the 300 grain Hornady and IMR 3031 lists a max load of 54 grains, but I haven't pushed it that far yet. For the whitetails we have around here 48 grains works well with light recoil and good accuracy.

Check this out. Nolser tech told me not to worry. Said just check for primer flattening. I thought to myself,I won't see flattening until I am well past 50KPSI like in a Ruger 1? Right?How is flattening going to occur at a lower pressure in a lever?

[Roskoe]

I think the Nosler tech may have been blowing smoke up your pajamas. At pressures below about 55K, you aren't going to be able to tell much from the primers. I would just go by what the loading manual says and err on the conservative side.