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Old 01-27-2022, 01:29 AM
Johnly Johnly is offline
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Join Date: Sep 2006
Location: Eugene, OR
Posts: 953
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I did exactly almost you are undertaking, except I spun on a 221 FB barrel continued to use 223 magazines to feed the shorter round. I have a CZ 17 Hornet barrel that I plan on rechambering to 17MKIV to save some wear an tear on my KoO 17MKIV.
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