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Old February 4, 2013, 05:10 PM   #16
James K
Join Date: March 17, 1999
Posts: 23,631
It sounds like a combination of a tight barrel/cylinder gap and the type of powder in that CCI ammo. Firing a revolver causes the cylinder to expand lengthwise. If the gap is too small and the gun is fired rapidly without cooling, the cylinder will bind up. That expansion can be greater with some powders that produce more than normal heat.

Measure the B/C gap. If it is less than .006", I think that is your problem, but I wouldn't have it fixed if you can use ammo that doesn't cause a problem.

If you want to use that CCI, then send the gun to S&W or have a gunsmith enlarge that gap.

Jim K
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