I have a PM 45. I carry with a round chambered and a full magazine. I use Federal Premium 230 grain Hydra-Shok JHP. Sunday I was planning to take the .45 to the range so I ejected the magazine and tried to eject the chambered round so that I could load target rounds. That is when I discovered that I could only pull the slide back approximately 1/4" and no further. I used a mirror to look down the barrel and the round is clearly in the barrel with no apparent obstructions in the barrel. The slide is in its normal closed position with no gap at the back of the barrel. The ejector projects slightly indicating that there is a round chambered. The folks at Kahr said..."it is likely the round has a slightly long overall length and the nose of the bullet is contacting the rifling on the barrel causing it to be difficult to eject" I think that this is a plausible explanation as I may have chambered this round several times and the hangup on the rifling may be enough to prevent the extractor from ejecting the round. My question is should I just go to the range and fire the weapon? I don't see any evidence that would suggest that the round is not chambered properly. Thank you for your suggestions.