Why on lots of semi auto shotguns, do u have to turn over the gas piston to hoot light and heavy loads? Why is that? What shotguns shoot light 2 3/4 and 3in loads without switching the gas piston? That shoots accurate and reliable?
Not sure which make of auto-loader you would be referring to. My favorites are the Remington 1100 and 11-87 and the Winchester Super X-1. Those have self-regulating gas systems that require no changes. The only gun I have used where you need to turn anything around is the recoil-operated Browning Auto-5 and Remington model 11. Those use a series of brass friction rings and bushings to regulate the recoil system.
The Saiga 12 has 2 gasoline port settings, yet a low brass shell won't cycle very sturdy to in no way. the reason being that in case you fireplace intense brass in the low placing it slams the bolt excessively and could at last overwork the shifting areas and not sturdy on the receiver additionally.
It takes a set amount of gas pressure to move the bolt back and forth on a semiauto. Too little and the bolt doesn't go fully back causing the shell to fail to fully eject and/or causing the next round to fail to feed. Too much and the bolt goes back and forward too fast causing unneeded wear and in some cases going back and then forward before the spring has a chance to push the next shell up, causing a misfeed. A light load produces a smaller amount of gas pressure. A heavy load produces a larger amount of gas pressure. A regulator on your shotgun allows you to adjust the size of the intake so you get the correct amount of pressure. Note that many modern semi-auto shotguns are set up so they can handle all sorts of different shells without the need to adjust anything. Remington 11-87, Remington Versa-Max, Browning Maxus, Browning Gold, Browning Silver. Benelli M2, Benelli Black Eagle, Benelli Vinci, are all guns able to handle all sorts of different loads and take care of the adjustments themselves
