You need to practice with your .22 the more you shoot any gun the better you will be with the others as well. We go through a couple bricks of .22's a weekend and it really helps a lot. You can shoot over 1000 rounds for less than $30 and that will help you get more comfortable shooting. Then you can shoot a couple boxes through your .270. For a .270 there is no reason to geta muzzle break. THey are really loud and most people don't like to shoot near someone that is shooting one with a muzzle break.