help:3 round burst with my FEG Mark II

[mept]

I went to the range to try to decipher why my FEG in 22LR will shoot occassional 2-4 round bursts. Here is just the facts:
1. Bursts occur only with Federal gold medal 40 gr.
2. No bursts occur with:
Win. HP's
Rem. Hi-Speed
Super-X
3. Bursts seem to occur after 50-75 rounds from an initially clean and lubed gun.
4. twice burst upon racking slide, finger off trigger, unsure of position of safety which is on the slide.
5. Range worker said it may be a defect in the sear. But he did not see how the gun fired first hand.
6. Bursts have occured from DA and from SA trigger position.
ANY TROUBLE-SHOOTERS OUTTHERE PLEASE USE YOUR DIAGNOSTIC SKILLS TO HELP SEARCH FOR THE CURE.

 

[beemerb]

Check your firing pin.Sounds like it might be binding when it get a little dirt on it and sticks in the forward position.Might need a little polishing.
Bob

 

[fastforty]

Run this baby over to "The Smithy", I think you're in the wrong forum.

 

[Mal H]

Since you did run it over to the Smithy, I'll lock this one up. All future responses should go Here.