This is the most accurate of all bullets, jacketed or cast, that I've tried in my Marlin Cowboy .45 Colt.
It is the hardest bullet Sierra makes, according to their info. It may be a good one to try in the 454 Casull.
www.sierrabullets.com/store/product.cfm/sn/8830/4515-dia-45-cal-300-gr-JSPThis one over a healthy load of 4227 is bad medicine. Moves pretty fast out of a 24" barrel. They're not always easy to find. I pick up a few boxes every chance I get. Shelf life is very good....
DF
