Thanks for the advice. I hadn't thought about the fact that I put the lighter spring in the gun.
When I had it converted into an SBS, I had the gas port widened and even them for it to cycle the birdshot I have to open it all the way.
As this is strictly a range play-toy and an amusing means to shoot almost a whole round of skeet without reloading I may just stop shooting buckshot through it all together to avoid beating the hell out of it.
"Our contract called for 16 cases of rifles and ammunition for $10,000 dollars, not a machine gun...........That is our present to the General"-Pike Bishop