Strange one today at the range. I haven't had this happen before when firing, so here's the problem: I was firing normally, nothing super fast or fancy. No limp wrist problem in the past causing slide issues, so I doubt that did it. Anyway, I got a FTF. Put the gun down and realized that the slide was about 1/4-1/2 inch back, not fully forward like it should have been after the last round was fired. Thought I might have a dud round or stuck bullet so I tried to rack it. Wouldn't let the slide come back at all. I pushed the slide forward the last 1/4 to 1/2 inch and it went with no problem. I was then able to pull the slide back and get the "dud" round to extract properly. The round probably wasn't a dud, it looks like it was a weak hit from the pin that hit right on the outer edge of the primer and wasn't enough to ignite it. Shooting 165gr UMCs, haven't ever had an issue with those before. So... this slide not fully forward problem I have had before. But only when I was working the action and not snapping the slide forward using the recoil spring. The slide would stop maybe a 1/2 inch short of fully forward and I had to push it the rest of the way. This issue I figured was caused by me not allowing the recoil spring to do its job. Problem is, this slide problem happened today when I was firing so the spring should have had nothing impeding it. I religiously clean my guns after a run to the range, including the rails and rail tracks in the slide. Any thoughts on what might be causing that? This is a fairly new gun with about 800-900 rounds through it.