Quoted: The regulator is part of your problem, a loose gas plug can cause gas to be lost. As alrerady mentioned, the gas tube retaining pin make sure it is in place or you will loose to much gas. If it is there take it out and unscrew the gas tube then screw it back in untiltight then back it off until the pin can be reinserted. What is happening when you are having failures, try to explain in detail, so we can try to help you out. Lastly, what kind of Ammo are you using?
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I blocked the gas relief hole with a shim to force the gas through the action. No effect.
It is like the gas pressure is not getting to the piston. When it fires, the regulator seems to be moved rearward pushing the retainer spring off the nut it holds on to.
Gas tube retaining pin?? Do you mean the gasblock crosspin?? It is in tight with no visible leaking.
It feeds when cycled by hand, no FTF, and extracts fine. When fired, gun goes BOOM, bolt comes
back about 1 inch or so, and partially extracts shell. Stops dead. Extract spent shell, let bolt forward,
repeats previous steps. Ammo is SA .308 in battle packs.
Once you replaced the regulator and rechecked everything else, you should check to see what size opening you have in your gas block I believe the factory size is around .096 it is said the you can factory improve the design operation by opening this up to .109 but no more then .120. I measured friend of mine that had a DSA made barrel that measured out to .128.
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Gasport is clean and wide open. I can stick a round toothpick through it clear down to the barrel
through the top of the gasblock. I dont think it needs to be opened any larger than it is.
It did feed 5-6 round properly yesterday, but i couldnt repeat what i did to make it work that one time.
Any help is appreciated and thanks to all ... i want to solve this one!!
KyARGuy