Originally Posted by Slipperychicken
It's called a Crossbow. Or just a regular bow. Or craft a Stake-Gun
Get the machine-gun crossbow which Van Helsing used in the movies. I know it's complete nonsense, but it would be great for vampires.
No, crossbows are not "wood-tipped bullets". Crossbow bolts are traditionally wood with steel tips, although modern versions tend to replace the wooden shaft with a hollow aluminium one.
An actual wooden bullet fired from a gun would only be possible for a low-energy round, as the explosion of the propellant charge would otherwise shatter the bullet. This principle (fragile bullets that disintegrate on firing) is in fact used for designing certain "blank" firearm rounds.