Thanks for the info. I may not be able to get 2000 fps with a 600 grain bullet, but that was my goal. I know I can attain 5500 ft/lbs with a 450 grain bullet. While 4400 ft/lbs is alot, this can be reached with 50 alaskan loads by Buffalo Bore ammunition,(factory load). Since the custom work and expense are involved, I am hoping to better 50 alaskan performance. It kind of defeats the purpose if it just matches the 50 alaskan. I will just have to work up slowly and see what she can do with 600 grain bullets. I want to push the limits, but only as long as it is safe and functionable. Thanks again, Ken