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Mr. Postman, Buy a new battery for your chronograph. It has been my experience that very clean barrels register significantly lower velocities than barrels that have had a few put through them. If your barrel is scrubbed clean, shoot over the chronograph 6-8 times and see what happens. I am guessing a 60-70 fps difference. Just enough to make you think you have a slow barrel, or more room for powder. |
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