I have just bought a new to me semi-automatic shotgun that works on the recoil principle with a free floating carrier. As a function check, I'd like to put some varieties of light and heavy loads to figure out what type of ammunition it will fire reliably.
Which type of loads should I buy to try it out? I already have 3" magnum slugs, so where would be the "light" and "middle" and average loads to test out.
Which type of loads should I buy to try it out? I already have 3" magnum slugs, so where would be the "light" and "middle" and average loads to test out.

-- Rifle, Pistol, Shotgun
Clean and oil the gun properly. As others have mentioned the owner's manual is definately a good place to start.
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