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Posted: 10/9/2009 7:40:22 AM EDT
| Does the rifling on all AR-15 barrels twist in the same direction? Is there a benefit to rifling a barrel in one direction or the other?? Noticed for the first time that a rifle I was looking at has "Right Hand" threads. |
| The twist will always be opposite of the threads on the barrel tenon so the barrel doesn't unscrew itself during firing. This is true for all barrels which are threaded to their receivers and aren't held in place by any other force but torque. Of course, the AR-15 barrel is threaded to an extension but the same principle applies. If the barrel is swagged or pinned to the receiver, the twist direction is not relevant. Most guns that I've shot have a twist which torques the rifle counter clockwise or into a right handers cheek. I don't know if this matters much but it would seem left handers would experience a slightly different dynamic during recoil than right handers. Probably doesn't matter much. |
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Quoted:
The twist will always be opposite of the threads on the barrel tenon so the barrel doesn't unscrew itself during firing. This is true for all barrels which are threaded to their receivers and aren't held in place by any other force but torque. Of course, the AR-15 barrel is threaded to an extension but the same principle applies. If the barrel is swagged or pinned to the receiver, the twist direction is not relevant. Most guns that I've shot have a twist which torques the rifle counter clockwise or into a right handers cheek. I don't know if this matters much but it would seem left handers would experience a slightly different dynamic during recoil than left handers. Probably doesn't matter much. That's what I was kind of getting at. Spinning the bullet in different directions might change the felt recoil a bit. Especially at higher calibers? |
The largest caliber I've shot without a break was a 460 Weatherby but the most punishing I've ever shot was a Ruger #1 in 416 Rigby. The #1 is just a design that imparts every ounce of pain into the shooter that's possible. Never noticed the twist as being an issue. It's the shoulder dislocation that always gets my attention, a real bone shaker. 
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