Mine I recently tried at the range and would misfire every other round. Apparently an edge on the bolt was catching onto the tip of the ammo, and cause the ammo to 'bend'. Where it caught on the ammo is the 'indented line' you see on the bullets below.
Gunsmith recently helped shave off the sharp edge off the bolt, but haven't yet gone back to the range since to see if it made a difference.
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