[DrHenley]

The CCI Blazers got me through the Rimfire match with only one jam, which is pretty good for any 22 semi-auto.

(A little background on the Kimber mags... Only one of the three Kimber mags worked at first with any ammo, but after studying the difference between the good mag and bad ones, I discovered that the top of the feed lips had a casting sprue sticking up that retarded the slide. Once I filed that off, the mags seem to work fine with Blazers and Mini-Mags.)

I wasn't happy at all with the accuracy of the Blazers however, and by the end of the match the feed ramp was filthy, so I'm going to go back to the extremely clean burning Federal Champions and try to figure out how to get them to cycle the slide completely.

Since the Blazers seem to cycle the slide well, I think the mag problems are solved, and something else is at play.

The Federal Champions were giving me one jam every other mag or so, so I think just a small amount of tweaking should get them closer to 100%. It was obvious that all the jams were caused by the slide not going all the way back. Sometimes it would close back on the empty case.

In manually cycling the slide, I identified a couple of rough spots, mostly due to the shape of the lower part of the firing pin retainer. Instead of a nice smooth radius, it was more of a semi-rounded bevel. I got out the Swiss files and reshaped it to more resemble the contour of the firing pin retainer on my 45 slides. That should make the initial contact higher on the hammer, giving better leverage, and it should also smooth out the contact between the hammer and the firing pin retainer.

Manually cycling the slide feels much smoother now. Hopefully that will allow the Federal Champions to push the slide all the way to the rear.