16" barrel

sheepherder · 03-05-2009, 06:15 PM

I've always wondered about the "carbine" barrels...Using a commercial cartridge, one that won't blow the extractor through the breech block, aren't you reaching the point of diminishing returns with that length barrel??? By the time the bullet reaches the muzzle (I'm theorizing), the pressure has dropped and the friction from the longer barrel with lowering pressure is actually slowing the bullet instead of accelerating it...

That's my line of thinking anyway...

03-05-2009, 06:15 PM	#3
sheepherder Lifer Lifetime Forum Patron Join Date: Feb 2009 Location: ...on the 'ol Erie Canal... Posts: 8,197 Thanks: 1,416 Thanked 4,462 Times in 2,336 Posts	I've always wondered about the "carbine" barrels...Using a commercial cartridge, one that won't blow the extractor through the breech block, aren't you reaching the point of diminishing returns with that length barrel??? By the time the bullet reaches the muzzle (I'm theorizing), the pressure has dropped and the friction from the longer barrel with lowering pressure is actually slowing the bullet instead of accelerating it... That's my line of thinking anyway...