What are the Craft DCs for firearms and ammo for someone who does NOT have the Gunsmithing feat? Also, would Craft (weaponsmithing) cover firearms and ammunition? Perhaps the latter needs Craft (alchemy) instead?
Raw components still cost 1/3 market price, as per the craft skill, rather than 1/2 as stated in the Gunsmithing feat, right?
It looks like Ultimate Combat diverges from the Core Rulebook when it comes to crafting Firearms and ammunition.
Near as I can tell, you have to have the Gunsmithing feat to craft that stuff. In which case there is no craft check or DC, you just automatically succeed in the time frame given in the feat description.
Bullets, pellets and blackpowder cost one tenth market price.
Guns and cartridges cost half the market price.
Alchemical cartridges require that you have a rank in Craft (Alchemy), but there is still no check.
It's a little wonky, but I guess it allows a Gunslinger to function in a setting that does not necessarily have guns. He might as well make all his own stuff anyway since he gets Gunsmithing for free at 1st level.
For example, it would take a Gunslinger 1 day and 99 gold to craft 90 bullets and 90 doses of blackpowder.
Alternately, 1 day and 495 gold would net the Gunslinger 66 metal cartridges.
Page 101 of Ultimate Combat has a table for the DCs of Firearms. I think it's for use when the GM introduces firearms and the players don't have Gunsmith Feat yet.
As Gunsmith feat allows you to make and fix firearms with no roll and same for ammo (Alchemical Cartridges you need 1 point in the Craft (alchemy) skill, though.)