It’s been awhile since I’ve cast anything, but I’m curious if anyone has tried to make .300 blackout rifle rounds from cast boolits. If so, we’re they able to function in an AR pattern rifle without much trouble? What did you make the boolits from, source wise? I’m thinking subsonic loads would be interesting to try, but I’ve never cast for a rifle caliber before and would love to hear your tips and tricks! Thanks!