no_problem
Member
- Joined
- Apr 22, 2006
- Messages
- 342
When the AR began life back in the 60's, they came with 1:14" twist. This twist rate, when used with a 55 grain bullet, barely stabilized the bullet. The result was that the bullet tumbled upon impact, causing great bodily harm. As the AR modernized, barrels got shorter, and twist rates got faster. Today, 1:9" and 1:7" are common. These new faster twist rates stabilize the bullets much more, in some cases lighter bullets in these twist rates might twist so fast that they heat up and begin to deform from the heat of the fast twist.
There is little argument that today's faster twist rates do much more to stabilize the bullets, increasing their accuracy at farther distances. But the faster twist rate seem to negate the heavier damage that a tumbling slower twisting, lighter bullet can do.
There is little argument that today's faster twist rates do much more to stabilize the bullets, increasing their accuracy at farther distances. But the faster twist rate seem to negate the heavier damage that a tumbling slower twisting, lighter bullet can do.
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