Hey guys, i went to get some ammor for my rem 870, and i read that steel shot or loads or whatever can be dangerous to your barrel, can anyone tell me what kind of loads would be dangerous to my barrel, remington 870 18 in barrel cylinder , the home defense one, can u guys also tell me what slugs are best for this same barrel as well as what loads work well when exterminating prairie dogs and rabbits, and a few coyotes from grandparents property. Thanks guys.