Troubleshooting the Jam... Help!

[Heinmot]

OK, and update.

Jamming continues using the Mec-Gar Mags.

I have ordered replacement springs from Wilson but they haven't arrived yet.

The jams occur most frequently {but not exclusively} with the last 3 or 4 rounds in the mag. I HAVE tried lubing the mags with Tri-Flow.

Also, when hand feeding, the gun feeds smooth as can be. Trouble starts when the trigger is pulled. Appears that the cartridges aren't rising fast enough up to meet the returning bolt face and are struck just in front of the rim, causing the shell to either jam tighly at an angle of entry to the chamber, OR quite commonly, get caught with the bullet sticking straight up out of the action with the bolt face resting broadside against it.

I HOPE the new mag springs work. It does appear that a slightly shorter bullet might not cause as much friction inside the mag. Longer bullets would just cause more friction, I believe, and compound the feeding problem.

Any more ideas, suggestions or theories?

All are welcome!!

Anybody else have this problem??