Fixed.
I tried a lighter spring in the PJ SCS buffer, no change.
went back to stock buffer set up, no change.
Started removing weights from buffer and by the time I got to 0 weights (just the rifle length buffer) it works.
I will still use the JP SCS when 223 upper is attached.
Very touchy setup when shooting 6 ARC with +2 gas.
Now on to load development.
Cheers
Philip
I tried a lighter spring in the PJ SCS buffer, no change.
went back to stock buffer set up, no change.
Started removing weights from buffer and by the time I got to 0 weights (just the rifle length buffer) it works.
I will still use the JP SCS when 223 upper is attached.
Very touchy setup when shooting 6 ARC with +2 gas.
Now on to load development.
Cheers
Philip