Anyone with any experience with this gun and round? When fire-forming the brass, using sierra 40 gr BK, AA1680 powder, per FA instructions, I was getting 99% keyholes at 25 yards. The factory target had no keyholes. The neck tension on the cases, prior to fire-forming was minimal, so I placed a "slight" crimp to hold the bullets in place. Perhaps, that deformed the bullets enough to cause the problem. When "miking" the case necks, after fire-forming and resizing, the dia. was 0.2425" which is correct and neck tension seems appropriate without crimping. Will have to try the loads with the formed cases and see.
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2010 SWPA Long-Ran
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