The polish job will probably help. I have used and still use that ammo and have never had one "hang" on the feed ramp. I would try the same ammo now and see if the polish job fixed the problem first. Another thing I did before the first round went down the barrel was to rack the slide like 500 times (probably more because I didn't keep good count). I have had NO "hang" rounds or jams at all. I have put over 700 rounds thru it to date. The only problem I have is that the casings fly out in every imaginable direction and distances (which isn't really a problem but I like to recover all my brass). I am going to get the springs to try to tame the recoil and see if I can tame the distance the casings are ejected. So I would try more of the ammo and see if the polish worked, JMO, but would buy ammo if you can find it.