02-10-2024, 09:17 PM
CCI BR4, 450 & #41 primers are all pretty much the same. They're all good for AR type rifles along with Federal 205M, GM205M, GM205MAR, Remington 7 1/2 BR & Winchester #41.
CCI 400s may suffer from slam fires in ARs due to the inertia of their floating firing pins. I'd have no problem using 400s in bolt guns though. Don't use Remington 6 1/2 in ARs. Their cup thickness is the same as CCI 400s.
CCI 400s may suffer from slam fires in ARs due to the inertia of their floating firing pins. I'd have no problem using 400s in bolt guns though. Don't use Remington 6 1/2 in ARs. Their cup thickness is the same as CCI 400s.
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