ferggie,
I use Barnes Bullets mostly and really like the way they shoot and perform on Game. The Barnes Buster is a Heavy for Caliber bullet that is a lead core copper jacket bullet that they built for Big Game ... Bears, Hogs, Moose, and Bison. I have never used them yet, because I really like the XPB IN MY .460 S&W the hydro-shock it gives an animal is unreal, all of my kills have been one shot kills with the XPB , I use the .275gr. In my .460 S&W.....To answer your question yes you can shoot that bullet in a .460 & your .454. I have a box of the Buster to try I just havnt had a chance to get em ready, and the XPB really shoots great in my gun. I hope this helps , and good luck, happy hunting!