Could someone please help me with the info for heavy metal. Equipment needs etc. Specific questions: can u use a red dot on the 308? does shotty need to be a pump? I have an AR10 type, an HK 45 and a Rem 870. Will that work? do you use fmj type(xm 80) or what???? How many shell holders and what type? How many mag holders? Just anything you can think of that would help me.. thanks in advance