Hello, this will be my first post /ubbthreads/images/graemlins/smile.gif I have a Remington 700P in 300 RUM, with a 26" heavy barrel, 1 in 10 twist. Will the 220 gr. Sierra matchking stablize properly with this twist rate? I get consistant 1/2" 5 shot groups at 100 yards with the bullet, but 1" to 1.5" groups at 200 yards. Just wondering if the bullet is not stabalizing properly. Thanks for the info.