Welcome to Librarium Online!
Im thinking about starting a Death Skull army... and i was wondering about something.. i know this is a stupid question... but when you decide that your looters are gonna copy...say, a SM devastator squad... they get the bolters too right or is it just the special and heavy weapons?
No, just the optional weapons: So a devastator squad could take a mixture of lascannons, missile launchers, etc.; Scouts could take sniper rifles, heavy bolter, etc. Watch out about putting too many weapons in with one mob of lootas b/c they shoot each other on a roll of 1; with too many looted weapons firing in a squad you're almost guaranteed to roll a 1 and wipe out somebody; it really sucks when you shoot one of your 45 pt lascannon "orkastator" lootas. YMMV, but I find using small mobs of lootas with a single looted weapon (e.g., a SM tac. troop's lascannon option) is more effective; it costs much less and you run less of a risk of using the 'oops, sorry mate!' rule.