Originally Posted by Clusterfrack
My SLP Mk I has been flawless with the light piston and any 2 3/4" shell that's 3 dram or heaver. For the first 100 shells or so, it would short stroke with some of the lighter loads, but not anymore.
Once you get to about 1K or so, it will run 2 3/4 dram loads 100%. In fact, it will run the 2 3/4 dram loads with the heavy piston once you get to about 2.5K rounds. Then you can run the heavy piston and shoot buck and slugs intermingled with birdshot and increase the longevity of the shotgun.