I have an old h&r 88 single shot 12 gauge that I have replace every part in and it still won't hit the primer hard enough on some shells. Tonight I have narrowed it down to winchester xpert shells I have tried 4 different loads and it's like it's not hitting the primer hard enough, I can shoot a hundred of my reloads or any of the cheap stuff and it works every time. Anyone have any ideas because the only thing I can come up with is to make a longer firing pin.
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