Slugged my ATI 1911 at .448. Seems odd to be undersized versus oversized. Used calipers with multiple careful measurements. Going to have my machinist Neighbor verify with his better micrometer.
Gunna run .450 sizer after PC. Doubt I can run as dropped in this gun it seems (yet to buy mold).
What is the biggest over bore size you have run?
Secondary note. These rifling grooves seem real shallow compared to 9mm.
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