shuvelrider wrote:Does anybody know of a source for published data for light target loads, I was wanting to load some cast lead .452 bullet for range use. ...
shuvelrider-
It's not completely clear from your post what sort of load you might consider to be "light". Are you referring to bullet weight? Recoil intensity?
As far as I know, Lyman's Reloading Manual, 50th edition, is the only reliable source of cast bullet reloading data for the 450 Bushmaster. Their data were collected following SAAMI protocols. They show a load using a 225-grain cast bullet with a MV of 1354 fps. That's pretty light.
(If there is another source of tested 450B cast bullet data, I'd be delighted to learn of it.)
Good luck.
--Bob