Question concerning the Gun chemist

[JuliusCromwell]

what Bomb Discovery work and don't work with Arcane ordnance. Im trying to keep my build legal but i am not sure what Discoveries are legal to use with my class feature.

I am starting at level 8 and will be going to level 16 so i'd like to know was discovery I should take

Plan to play a tefling and duel wield pistols

[LeMoineNoir]

Gun Chemist link, for the curious.

D20PFSRD wrote:

Alchemical ordnance is treated like an alchemist’s bomb for the purpose of discoveries, though such discoveries ignore any effects associated with a bomb’s splash damage or radius unless the gun chemist also applies the exploding bullet discovery (see below). A scattering shot modified by a discovery applies additional effects as though affected creatures were caught in the splash damage of a bomb rather than subject to a direct hit. The DCs of saving throws associated with alchemical ordnance are equal to 10 + half the gun chemist’s alchemist level + the gun chemist’s Intelligence modifier.

Since Ordnance counts as an Alchemist's Bomb for the purpose of Discoveries, pretty much every Bomb Discovery should work, though effects related to the splash won't work unless you use either the Exploding Bullet Discovery or a Firearm with the Scatter quality.

Since Exploding Bullet is marked with an asterisk, it cannot be used alongside other similarly marked Discoveries.

[JuliusCromwell]

oh thanks that helps a lot.