Well, I took my Springfield 1911 (basic GI style) out this week and was having a bunch of issues with failing to feed. The slide would stick with the round halfway into the chamber. If i gave it a slight (literally, very slight) nudge on the back of the slide it'd pop into place. this probably happened on 10 out of 24 rounds. I'd shoot it, it'd work for 1 or 3 shots, then fail to feed correctly, then it'd work for a few, then not. I was shooting the Winchester white box FMJ stuff, 235 grain I believe. I've had this happen once or twice in the past, but never like this. Mag problem? Using the chip mccormic shooting star mags. Maybe an increased power recoil spring? Like I said, it just took a slight nudge, maybe it just didn't have enough oomph to get it up there? If so, what spring rating would be heavier than my stock one? Maybe a combo of the 2? any help would be good!