Anybody know where I can find data for lighter loads for the 458 WM ? I have a bunch of 230 grainer 45 cal jacketed bullets that I got for real cheap.

Regards,
Tack

these sound (by weight) like .451 bullets, rather than .458 bullets.. they'll fall into the case

jeffe

If at all possible, try to find a press to bump up your 45 ACP bullets. There's a big jump from .451 to .458, like jeffosso says those small bullets will just fall into the brass.