Originally Posted by BELT_FED

You guys really need to pick up Hatchers Handbook.. Hatcher was the millitaries go to guy for 60 years. If they want to know if you fired a 30 cal 1919 straight up in the air would the bullet be leathal when it returned to earth. He answered the question and the answer is no its not. The book post many of his findings so basicly its a book of facts and a very interesting read. He addresses this very question in his book showing groups fired with and without muzzle devices. And he stated that its not some magical taming of gasses or anything cool like that but simply dampening of vibrations in the barrel.. so called "tuning" if you will... Your break adds weight to the end of the barrel, the weight you added just so happen to be the right weight and is allowing less vibration in the barrel while allowing it to settle in the same place for the next shot. kinda like target shooters adding pads to the end of their stocks to apply slight upwards pressure on the barrel, you are adding a downward pressure to yours