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Old 02-08-2010, 8:43 PM
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ar15barrels ar15barrels is offline
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Originally Posted by BlackRifleFan View Post
Yeah I hear all these sniper guys say "stay supersonic" but heck 45 ACP is subsonic as soon as it leaves the barrel.
It's the transistion that causes the problem.
If you get the bullet supersonic within the barrel, it's still going to travel where it's aimed.
When the bullet transistions back through is what causes the problem.
It the bullet never even goes supersonic, that's fine too.
You won't have to worry about it ever transitioning the sound barrier as the sound wave will always travel ahead of the bullet.
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