The muzzle blast from firing short-barrelled rifles gives me a headache in just a few rounds. This is with double hearing protection (plugs and muffs). It is the shock wave and recoil that is causing the headache, not the noise.
JB says the headache means that you are giving youself a mild concussion; not good. Actually, many mild concussions.
My theory is that this may cause cumulative brain damage resulting in the common "gun loony" syndrome that most of us on the campfire suffer from to varying degrees. The term "loony" is obviously short for something...regarding mental condition.
