(QUESTION AT THE BOTTOM) So I finally just took my new PF9 out to the range to test it out. Since I only had one box of 9mm (Blazer Brass 115gr) I bought another box at the range to shoot with. The ammo I bought was from a local company that reloads once fired brass; it was also 115gr. Well I started running into a few issues. Two fired cases got stuck in the chamber and I couldn't for the life of me rack the slide so I had to remove the extractor, remove the barrel and push the spent case out with a rod. I also noticed that the primers looked flatten like the loads were too hot and they were experiencing primer flow. Luckily the guy who works for the ammo reloading company also works for the range. Well after some time of test firing with multiple lot numbers and multiple weapons, we came to the following conclusions. 1) My Kel-Tec PF9 has a rather large firing pin hole which allows some primer flowback. This is not critical or because of the ammo (which was my first thought) because we tried the same ammo in several guns. 2) The local ammo is all from once fired NATO brass. NATO appears to not have as deep of a "extraction groove" (the actual name escapes my mind right now) below the rim. 3) My PF9 like the commercial ammo over the NATO brass. They ended up refunding me my money on the ammo and are going to set aside a few boxes of their reloads in the commercial brass when they get some made up for me to try out. That range is always very helpful but I was extremely impressed today by their desire to help out and do some research with me to try to work in my new gun. So for anyone who owns a Kel-Tec PF9, what type of ammo, both range and self defense, have you found that works best. I have read that the PF9 doesn't like 124gr or higher. Is this true?