What piston are you running with these slugs?I used federal low recoil 2 3/4 slugs they come in a orange box tru ball technology. Then I had regular slugs from the federal blue box slugs 2 and 3/4 I think. It eats up basically everything I've put through it besides Winchester white box shells. The top one was the last slug I clicked it up 10 so I clicked it back down 4 times and I assume that should be good enough. I was battling the cold and darkness so I couldn't stay out too long.
My SLP came with two gas pistons. The red is the low power and black is a high power. I use the black when firing 3" buckshot or slugs only. I usually only 2 3/4" buckshot or slugs so I use the red piston most of the time. I know the newer SLPs ship with just a single gold piston or has FNH changed again?The red one, I have the gold one too. I have never used the gold one on account of shells that require that piston are too expensive.