Picked up my M2000 last weekend and got to shoot it for the first time yesterday. Guns nicer than what i was expecting. But have a couple questions. First, is what is the best way to break in this shot gun? Second, I wish I could get a riffled barrel for it. But there is not one available. Can I shoot slugs in the std barrel? Third, any popular mods or recomondations for the stoeger?