I've always felt I had a Midas touch with cast bullets. Any gun I've tried gave acceptable accuracy - until now. My Tikka 223 won't shoot cast worth a hoot. The gun is amazingly accurate with jacketed bullets. So it's not the gun. I've tried both 45 and 55 grain boolits and neither works. It has a 1 in 12 twist. Both of those boolits work in my Hornet. I've tried Blue Dot, Unique, IMR 4227, and SR 4759. They all gave consistent inconsistency.
I've got some of that Cerro safe alloy in case I need to make a chamber casting, but I've never actually done that. I would need help. Like how do you funnel the melted alloy down into that deeply recessed chamber?
Maybe I need to size the boolits bigger. Right now I'm sizing to .225 because that's the size of the dies I have. I don't want to buy a die for my Lyman 450 and not have it work. I like the Lyman better than the Lee push through dies. The Lyman seats the gas check noticeably better.
I was hoping to make this my main cast boolit gun but so far its not working.