I can't respond to the calibers specific. But, I do shoot a lot of Leadhead bullets in my .375SM. They shoot great and very accurately. They may be a good choice for you as well. I'd opt not to shoot them through a brake though, I long ago tired of the bits hitting me in the face. Never had a serious problem, and I wear safety glasses shooting, but debris flying at my eyes causes me to seek other ways of doing whatever it is I'm doing.