I apologize if this has been asked already, though I recently skimmed through a copy of the Dragonslayer's Handbook and saw the Wyrm Sniper archetype. Is it possible to use both them and the Musket Master archetype at the same time? The reason I ask is because of the Heavy Gunner and Musket Training abilities.
Musket Training is a full replacement for Gun Training, but Heavy Gunner doesn't make a mention of if it modifies or replaces Gun Training.