thanks running-man
I blew through 70 rounds and no problems with anything blowing back on me and it worked like a charm. I might pull the gas tube and check for crud before next outing. Defeating the semi-auto function will really open up my options for lower power cast bullet loads. It will make this rifle much more versatile.
I shot some herters steel case fmj today and had one split more than half way down the case. I have shot lots of steel case ammo in ak style rifles and never noticed this before. Hopefully it doesn't indicate a problem with rifle?