Originally Posted by IndyCA35
Originally Posted by rockinbbar


There's a sonic crack as the bullet breaks the speed of sound...

BUT, it's not louder than the muzzle blast.

If it were, the suppressor companies would be out of business.

Geez.


Before I call you and the two other guys delusional, it occurs to me that you may be unfamiliar with various different tyoes of ammunition. So I will restate it.

Pay attention. You may learn something.

If you go to a High Power rifle match where the range is 200 yards, and stand in the pits (where the targets are), the sonic ":crack" from either a 5.56mm 69 grain bullet launched at 2700 fps or a .308" 168 grain bullet launched at 2700 fps will be louder and will hurt your ears more than the report of the rifle from 200 yards uprange.

That's the facts, Jack.

The "muzzle blast" is louder from the firing line. (The sonic boom is not heard there because it propogates down range.) Suppressors help with that.

Suppressors have no effect on sonic booms, which is why ammo like the .300 Blackout, which is subsonic and doesn't make a boom, was invented.


I'm pretty familiar with all you discuss, and I give you that accuracy in wording.

What you're discussing is when the bullet passes you at beyond the speed of sound. As it was with working the rifle range as a scorer.

But is the perceived loudness the same when the bullet does not pass you? (If it were stopped by the berm...)

Another interesting phenomenon is bullet impact, and the sound it makes. It's all relative to your position to the gun firing, and the object impacted. I've heard some shots strike a deer or a hog, that the impact sound was louder than what I perceived the gunshot to be.

What actual decibel readings 200ft from the rear of the pit/berm, where the rifle is fired 100 yards before that is still in question. I imagine only a test with a decibel meter would give a correct answer.

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