Like I said. I finally got my glock 20 finished. Isn't she pretty? Well she's also a paper weight now. Storm lake barrel is the problem. Installed it. No fitting required to ft the gun. I thought that was great. Then I go to my range, pull back the slide, let it go, and bullet goes halfway in. Ok...WTH...so I drop mag, clear the weapon, and do it again. Same results. Next I take it apart and drop the ammo by hand. Some will only drop in half way, and some will drop all the way in. So I load one in the mag that slid all the way in, and rack the slide. Out of battery. Will not close all the way. I take the gun back apart and realize that I thought the bullets were going all the way in, and they were not. I pull these bullets back out and notice the bullets are hitting the lands. So from my non expert gunsmithing, I have come up with that the chamber is to tight to feed out of my mag, and the chamber is not deep enough to chamber the round all the way in. So I'm on the hunt for a 10mm reamer. Anyone have one? By the way this is underwood 200 xtp's. I'm pretty sure it's not the ammo, but this is the ammo I want to Shoot anyway.