I've never heard this argument before and it has not been my experience. Even if it were true, then wouldn't the turbulance be consistent and not affect the accuracy?
“In my tests, not having holes all around the brake effects accuracy a bit. I believe it does something to the bullet by the air pushed ahead of the bullet creating unequal turbulence in the bullet path. I’ve tried a few brakes where I drilled only holes on the top, test fired, and then completed holes on the bottom and in every case, accuracy improved.”
http://accurateshooter.wordpress.com/2009/09/11/muzzle-brake-performance-tests-by-bertalotto/
“In my tests, not having holes all around the brake effects accuracy a bit. I believe it does something to the bullet by the air pushed ahead of the bullet creating unequal turbulence in the bullet path. I’ve tried a few brakes where I drilled only holes on the top, test fired, and then completed holes on the bottom and in every case, accuracy improved.”
http://accurateshooter.wordpress.com/2009/09/11/muzzle-brake-performance-tests-by-bertalotto/
