Ok tried again to night, Data I have shows COL from 1.170 to 1.230 depending on which manual you look at. at anything from seating shoulder to the 1.230 ammo "jams" against top part of chamber. Lenghten out to 1.290 and ammo chambers fine (10rounds) using mag. release , Than firing rounds cases tend to catch on the "bullet shoulder " and won't eject.
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