The 310 Cadet and the 8.15x46R both shoot bullets that are .316. I was wondering if anyone ever tried shooting a 165 grain stop ring bullet in a 310 Cadet. Would the 310 twist handle the extra weight and length ? Would bumping up the velocity help matters? What are your thoughts ?

Mine likes a 0.325" and 0.311" heel with home made brass.
The bores can be anything and the chambers very also.
Best advice I can give  which ain’t much is to cast the chamber and make things to fit in it.

The longer bullet I feel you will have trouble getting enough velocity to stabilise in the 1:20 twist rate even if you size it to 0.311" or so and paper patch it to at least groove diameter.

Nice matching brasss cases and a heeled bullet that is a transitional fit in the fired case that seals the throat and engraves the rifling and away you go to heaven.
No sizing brass or bullets ,hand fitted and accurate.
Simple tools and cases last as long as you can avoid mangling them.

I tried 150’s in mine when I had nothing to shoot in it.
I thought I was defying the physics again and it showed promise sometimes to fooling me into it was working.
No I couldn’t get it to work and was starting to rub off some primer indentation on extracting cases where I gave it up.
Their is some sort of stabilising anomaly  around 700 fps or some such but it didn’t happen for me either.

I guess the twist rate programs I played with weren’t gunna allow me to do it.

Now if you reamed it out to 32 special with a full case of medium burning powder you “might” get it to work.
Thou that thin metal butt plate may seem to get sharper on the edges and somewhat harder after the first shot. 

Barrabruce wrote on Jul 9^th, 2019 at 11:33pm:



What powder charge do you use?  Great accuracy!  Are you doing this with the standard sights on a Martini Cadet?

Curl