I've been looking for a cast plinker load to use with my Mosin 90/31 and it seems I'm not having much success. Been trying a light 115 grain .312 cast boolit over 6 grains of Bullseye which is my go to load for 7.7x58 Jap. I can get a hand sized grouping all day long at 50 yds with the Arisaka and it also works for 30-06. The same load in the Mosin is lucky to hit the backboard of the target at 50yds, shot 20 plinkers yesterday and only hit paper once with the Mosin. Well at least I know what doesn't work, now I need to figure out what does.
I've slugged the bore and it came out at .311 but the bore is rough. I'm thinking that a heavier boolit in the 180 grain range .314 in diameter might be the ticket. Not sure what to do about the rough bore, it can't be doing the boolit any good getting shredded when fired.
The rifle shoots condom bullets just fine so there might be hope for it yet. Any thoughts on how to get the old girl shooting cast?
Thanks