Well, unfortunately I have shot all of 17 no. 8 birdshot shells through it, (with about 50% FTE, mostly stovepipes), and I bought the gun through gunbroker, so I guess I'll contact RAAC and see what they can do.
if it was low DRAM birdshot that will happen, the ports have some to do with that as well. If you are going to keep using #8 try the KA gas tappet and the gunfixer plug the ones i have used with that have feed even the cheap wally world Winchester crap
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