45-70 350gr sub-sonic load?

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Matt8995
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Posts: 2
Joined: Tue Jul 04, 2023 5:01 pm

45-70 350gr sub-sonic load?

Post by Matt8995 »

Hello all!

I recently purchased a Marlin Trapper and a SilencerCo 46m. I also happen to have a large stockpile of Hornady 350gr .458" RN bullets scored years ago for cheap. So now I'm trying to come up with a sub-sonic load for these bullets. I found a load online using Trail Boss but sadly this is not a powder I have and I can't find any to buy.

Anyone have any sub-sonic loads for the 45-70 using 350gr bullets?

Thank you!
-Matt
Matt8995
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Posts: 2
Joined: Tue Jul 04, 2023 5:01 pm

Re: 45-70 350gr sub-sonic load?

Post by Matt8995 »

I'm not one to usually respond to myself, but no one else has said anything.

I did a bit of testing with Alliant Unique today and found 13.5gr under a 350gr Hornady RN bullet seemed to yield a reliable 960fps. I found at 14gr it would jump up to 1100fps.
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