Bug Doc· Registered
What he is referring to is a part called a piston seal activator. It is an additional ring you can install to help the Super Mag cycle light target loads. It works by seating the rubber O-ring tighter and partially blocking off the pressure compensation ports. Without the activator Super Mags will cycle typical 2-3/4" field loads (1-1/4oz 1330 fps) just fine. Most will also cycle heavy target loads (1-1/8oz 1300 fps) without the activator installed.Bob N said:...While I generally like Remingtons, my brother has the 3 1/2" 11-87 and he tells me that you have to take the gun apart and do something with the gas system to go from a 2 3/4" to a 3 1/2" load. ...
To answer the original question, I've also hunted waterfowl for decades using autoloaders (mostly Remingtons but also Berettas and Brownings). Keep 'em clean, use appropriate ammo, and you'll love 'em.