Originally Posted by DrFootball
You mean " don't shoot any Thunderbolts" in that rifle, right??
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Not just Thunderbolts, any Remington ,22LR ammo, that is from my experience. That was some 10K ammo ago.
Current diet for M&P 15-22 rifle is Blazer CCI and Federal!
I do have Remington Thunderbolts and match grade; but, the Ruger takes them with no issues.