Dragon's Breath cartridge:
Is all of the damage halved on a save, that is, would this include damage from the Flaming property or from any enhancement bonuses?
Can these cartridges be used to attack a swarm?
Entangling Shot:
As above, does the damage halved include that from damage increasing properties? (Flaming, Bane, Holy, etc.)
Also, would the Experimental Gunsmith's alchemical vial innovation be able to use these shots and adjust the save DC as the ability outlines it?
Thank you.
From d20pfsrd.com
Dragon's breath
This cartridge contains alchemical compounds that, when fired, produce a cone of fire instead of the normal attack of a one-handed or two-handed firearm with the scatter weapon quality. The nonmagical flame deals 2d6 points of fire damage to all targets within the cone of the scatter firearm (DC 15 Reflex save for half). These cartridges cannot be used in firearms that don’t have the scatter weapon quality. Because this ammunition forces a saving throw instead of making an attack roll, the misfire rules are slightly different. If you roll a 1 with either of the damage dice, the firearm misfires.
Entangling Shot
This mix of black powder and an alchemically treated resin strong enough to survive the shot can only be loaded into a blunderbuss, a dragon pistol, or other scatter weapon. It deals half damage to those hit by a cone attack made with this weapon, but any creature hit by the shot must succeed at a DC 15 Reflex saving throw or become entangled for 2d4 rounds. An entangling shot cartridge increases the firearm’s misfire value by 2.
Vial Launcher: The experimental gunsmith adds a special tube onto her firearm that can hold 1 vial of alchemical material, such as alchemist's fire, a tanglefoot bag, or a thunderstone. A special trigger allows her to channel the force of black powder into this tube to launch the vial as a ranged attack with half the range increment of her firearm. The experimental gunsmith can take this action in place of any single ranged attack, and may use the same attack bonus that she can apply to the firearm. If the alchemical substance has a save DC, it becomes 10 + 1/2 her experimental gunsmith level + her Wisdom modifier when she launches the vial from her firearm. This increase only applies to the initial saving throw. If additional saving throws are called for, they are resolved as normal. Reloading the tube is a time-consuming process and requires two full-round actions. If the weapon misfires while loaded with an alchemical substance, it detonates with the experimental gunsmith (and the firearm) as the target.