Hi James,
I was hoping for some more information about one of your previous answered questions.
http://paizo.com/threads/rzs2l7ns&page=385?Ask-James-Jacobs-ALL-your-Qu estions-Here#19247
One of my players wants to wield a Launching Crossbow, as an Alchemist, which would theoretically lets him add his int mod to damage for a single attack twice.
As per Alchemist Throw anything(Ex), an alchemist adds his Intelligence modifier to damage done with splash weapons.
As per Focused Shot (Combat), you may make an attack with a bow or crossbow and add your Intelligence modifier on the damage roll.
Wielding Launching Crossbow, which is designed to launch splash weapons.
One argument for them stacking is they are separate sources, of damage, one splash, one impact.
Two against: the crossbow does not do any dmg and it is one attack roll so all attack bonuses need to be from different sources.
Would this situation fall under the statement that a modifier can't stack with itself?