According to Van Helsing (in Bram Stoker's Dracula) a vampire doesn't always turn a victim unless he kills them, and he doesn't always kill them. The ones he
kills are meant to be his brides-- Lucy and Mina would replace the harpies he left behind at Castle Dracula.
Love at First Bite said it took 3 bites. And I'm not gonna argue with George Hamilton.
So, if a vampire can live say, off a unit of blood a night (more or less) and has the power to mesmerize (it's those spooky eyes and chamber music) then they could be feeding, without changing anyone, unless they choose to, for eons.
Those scientists should crack a book once in a while.
The zombie show on the history channel was pretty amusing.
I'll stick to firearms with a machete back-up for killing zombies.
Silver bullets are for werewolves, a UV light can ruin a vampire's day, er night.
So let's review.
For zombies... hi-cap poodle shooter with varmint rounds and a machete.
For werewolves and vampires, turn your attention to an MEC shotshell loader and your trusty 12 ga shotgun. It's hard to cast silver bullets as silver shrinks from the mold, but silver pellets are a breeze. 00 is the size to shoot for, but if you err, err on the smaller size. You'll want a cylinder bore or Imp cyl. to ensure a better spread of pellets in hopes of hitting the heart on the first shot.
For vampires, use a high-brass hull and inside a plastic wad, load a sharpened hardwood dowel of aproximately 70 cal. harder woods weigh more, cocobolo and ebony are my faves, some purists prefer white oak, but they are probably using a double gun and making shells 5-6 inches long that actually look like stakes.
Upon further research, a duplex load of sharpened cocobolo 'needles' (ala flechette round) was buffered with consecrated wafers, but it's a very short range weapon.
Oh and Happy Halloween.