Break in period - SIG SAUER P320 X Compact/Subcompact 9mm Threaded Barrel, No LCI, 4.3in

I didn’t realize there was a bit of a break in period for new pistol barrels. I was having failure to eject on about the first 50 rounds. Racked the slide a bunch while I was on the couch and shot a few mags through it and now it’s running smooth. For what it’s worth, the thread protector would not screw down far enough to be flush with the end of the barrel, but I bought it to put a comp on anyway.