What will having the piston sealed do?
It will remove the spring breakage issue with these pistons. Most of the springs inside the piston tend to break at some point, usually like when mine did it was in the middle of a match stage. I had an extra piston with me so I could continue, but blew the stage. Went to single fire.
One of the benefits to the sealing, is you can shoot most any load out of it instead of having to change the piston from light to heavy. In my SX3 I shoot everything from the cheapie Wally World Winchester and Federal loads and the very light Remington Gun Club shells to high brass slugs, buck, and heavy hunting loads.
When you look inside the piston you don't see the spring anymore just a metal covering. Hard to explain, but it works. Zero failures in many many rounds.
Cheap too, if I remember around $50 with shipping. Also turnaround is fast, within 2 weeks including shipping. If you have 2 piston, I don't think it matters which one you send. Just one more way to make a great gun more reliable. Good investment.
gerritm
Does it increase the wear on the shotgun when using high brass heavy loads compared to using the regular heavy piston?