"...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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