okay, slightly mor profound update.
While trollin through Savage species i discovered a in depth explanation on weapon reach & damage increase as they gain size.
Now I may have already explained this but the first plan i had was to give the Iron colossus levels as a gunsling from PF and have him wield a six shooter rifle, which has the same stats as a normal rifle but with the ability to fire off 6 shots before requiring a reload. (the reasoning behind why i couldn't use one is the same reasoning behind why Ipods didn't exist in the 50's too much space).
so a quick side question I don't know if anyone is baised against pathfinder but i want to know based on core stats alone which is better?
the Paizo Rifle
DMG(M)////DMG(C)///Crit///Range(M)/Range(C)
1d10///////6d8////////x4 ///80/////////195
or the WOTC rifle (which came from Dragon 321, so technically Paizo Rifle Classic)
DMG(M)/DMG(C)//Crit///Range(M)//////Range(C)
1d12////8d6///////x3////200////////////487
As for his transformed state
Now the only question is do i stick with the fiend's mouth's
DMG(H)/DMG(C)///Crit///Range(H)/Range(C)
8d6////16d6///////x4/////150///////363
or the Heavy bombard's?
DMG(G)/DMG(C)///Crit///Range(G)/Range(C)
9d6////18d6?//////x4/////200///////487