^^What everyone else said. I'd work up your load and see what the rifle tells you. My most recent experience was that Norma brass was noticeably *lighter* than certain other popular brands, but that is going to vary caliber to caliber. Also, virgin brass will generally hold a little less powder than once fired, so if you are running into compression issues now, you might not run into compression issues once the brass has been used once. (presuming you're using virgin brass).
