Surplus 7.62 jamming

[jjk0091]

I picked up a bunch of Syrian 7.62 ammo at the gun show. After shooting some .308 shells this weekend with no problems I tried the 7.62 shells and immediately had problems with it jamming in the chamber. It would strip it from the magazine but would give a light hit on the primer and not fire. It was a real bear trying to pull the bolt back to eject it. I tried putting them in the chamber 1 at a time and they worked perfectly. Any ideas why they wont work out of the magazine?

 

[mkk41]

Depends if your chamber is cut tight to .308 Win specs. Most 7.62x51 military rifles have rather generous chambers , especially in the neck and leade and who knows what specs Syria may have used?

A set of 7.62x51 NATO chamber/headspace gages would tell ya.