Thread: .44 Mag Crimping

Originally Posted by PommyMcPomFace

What kind of grouping do you get with them? I've read it kind of goes to shit with the super heavies due to not having a fast enough twist.

I don't shoot them only have a 44/40 pistol they are to big for that, A mate uses them in an H&R with a 1:38" gets around an 1" groups at 50m.
bigest problem is the bore diameter they vary from .429" to .432" modern .44 mags have 1:20" twists and will handle 300 grain jacketed bullets
Cast bullets are short for their weight they don't have the jacket which is lighter than lead, also they are softer and reduce pressure with the same powder charge
and won't wear the barre.