scout bikers have shot guns - but as they are bikers they have relentless USR they could fire their bike's twin lnked bolters twice at 12" for a better AP and assualt, then why have shot guns? and bolt pistols? i'm confused! can they fire their TL bolters and their shotguns in a turn then assualt? or are the bolt guns purely for a single 24" shot? i'm probably being dim and missing something.....