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Old December 14, 2019, 02:07 PM   #11
T. O'Heir
Senior Member
Join Date: February 13, 2002
Location: Canada
Posts: 11,931
"...round doesn't orient straight..." That sounds like the back of the chamber might need chamfering. You extend the feed ramp about half way up the sides of the chamber with a fine file. Happened a lot with .45's trying to feed SWC's before they got popular. Most pistols come that way now. A new 10mm barrel may not have it already though.
Have a look at the extractor too. It clean and moving freely?
And look at the mag lips. If the mag is brand new, the lips may have gotten squeezed in a tick. Fixed with needle nosed pliers. A slight tweak to open the lips a wee bit is all you need do.
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