I have a Simson double in 405 Win, which does very well with Jacketed bullets. Would like to shoot cast due to price, etc. I have some nice 265 gr. Keith style, which will go just as fast as the jacketed without leading, However at 50 they are 2' apart! I have to DROP the velocity to get them to start to come together, and by the time I get close to regulation, the cases won't seal, and velocity is unusable. I'm kinda confused! Any help would be appreciated!
Thanks, Doug