Arm Cannon

150 PP
Common two handed heavy simple ranged weapon loading
Fires any tiny or small item weighting up to 12lbs with the range of Range (150/900).
Normally Items below 6lbs do 1d6 damage and 2d6 if bewteen 6 and 12lbs plus whatever damage item itself does, such as acid Vail dealing it acid damage on hit. Below are some items that fuction differently when fired.

Shrapnel:
When fire sharpnel such as ball berring caltrops or broken glsss from cannon those in cone infront you must make dc 15 dex save or take 1d4 priecing damage. Size cone is depents on how many lbs sharpnel use,
2lbs 5ft cone
6lbs 10ft cone
12 lbs 15ft cone
12lbs Loose Sand flour or other powder:
Those in 5ft cone must make a dc 10 con save on fail are blinded tell start your next turn on success are unaffected though likely annoyed.
Using ground pepper dc is 13.
Explosives:
Can entire choose a point within range to fire explosive at or make attack roll on creature within range. If hit creature with attack roll they automatically fail any Dexterity save associated with the explosive. Other saves such as con still make like normal.
Non flammable explosives such as pulse grenade or c4(if had stats) can be fired from cannon just fine. Flamable explosives such a grenades that use gunpowder and tnt how when make a attack roll a d20. On a roll of a 1 or 2 the exploive goes off inside the cannon potentially destorying the cannon.(depends if do enough damage) aswell you automatically failing any dex save associated with explosive.