Anyone know what the WeaponType codes are or what they do..? Trying to modify things like Flood and Poison Arrow but not working out well.. wondering if this may have something to do with it

Looks like it doesn't affect the weapon at all, so I don't know what it does exactly. :-/

Whenever I try to tweak a weapon to something different (Say changing poison arrow's payload container to gun or sentry container) it won't actually let me fire.. tried all sorts of stuff like changing around the values of the name and modifying it here and there, but it won't work even with a straight copy/paste of the base gun I'm copying without tweaks.. Is this even possible thru just the XML editing available?