Quote:
Originally Posted by gitrdun
I've often wondered what if any effect this tool would have on grouping improvements. I do deburr the inside of the flash hole on my target intended ammo as I've learned that this can improve accuracy. Is there proven fact that this uniforming step will tighten the groups further? Always looking to squeeze another 1/4" outta them.
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The benchrest guys do it. Think about what you are doing. You are making all the flash holes the same length inside and out when used with a flash hole deburr tool. Also making the primer sit flush and square in the pocket. This has to make ignition more uniform. now if most guys (including myself) can shoot good enough to see a differnce is one thing. But you can see it across the chrony.