...because the .30 R Blaser is a rimmed one it should be the better option for a double....(its about 10-15 % above the 30-06 Level and has a very good reputation when loaded with the right bullets - of course, not the 165 RWS-KS....instead you should try the 200 Norma Oryx and Vulcan, they both do pretty well in that cartridge...)