Vital Strike damage bonus

[My Self]

Gauss wrote:

wraithstrike, the Monk of the Four Winds is in Paizo's Advanced Players Guide.

The ability "Slow Time" the Monk of the Four Winds can spend a Swift action and 6 ki points to gain 3 Standard actions instead of one.

The Monk of the Four Winds can do any of the following with these actions: "...take a melee attack action, use a skill, use an extraordinary ability, or take a move action." and cannot do these actions "The monk cannot use these actions to cast spells or use spell-like abilities, and cannot combine them to take full-attack actions.".

Warrior In Red, you are not going to get an official answer but the rules are pretty clear here. You can take a standard action "melee attack action" and that qualifies you to use Vital Strike.

Considering the extreme cost involved this is really not that big a deal. You will only be able to do this once or twice.

Although with mythic Vital Strike, you can destroy the world with this sort of ability. A little exaggeration, but only a little.

[Avoron]

And sometimes you can destroy the world regardless.

[DebugAMP]

Can you Vital Strike with slow-firing weapons such as an Autograpnel or Railgun from the technology guide? I'm of two minds about the answer. Vital strike specifies that you can use it as part of the attack action. The slow-firing trait on weapons changes the attack action from a standard to a full-round action, but doesn't appear to change the fact that you are still using the attack action, so it seems as though by that intepretation vital strike would work. It seems a bit awkward however and I wanted to see if anyone else could weigh in.

[James Risner]

If you don't use attack action, you can't vital strike.

[Gauss]

Debug,

No, the Vital Strike FAQ states that "attack action" is a specific kind of standard action.

[DebugAMP]

PRD wrote:

Musket, Double-Barreled: This musket has two parallel barrels; each barrel can be shot independently as separate attacks, or both can be fired at once as a standard action (the attack action). If both barrels are fired at once, they must both target the same creature or object, and the gun becomes wildly inaccurate, taking a –4 penalty on each shot. Each barrel of a double-barreled musket uses either a bullet and a single dose of black powder or an alchemical cartridge as ammunition.

Since the action to fire both barrels is specified as being the attack action, does that mean that vital strike would allow you to fire both barrels twice using vital strike?