I've got a 550 on my .22 for rabbit shooting. Its fine for that, but at a price and I don't like tying up the rifle as dedicated night shooter. I wouldn't want to use it on my .222. I'd agree with Claret_Dabbler, go with a quality add-on or better still a dedicated day/night scope like a Longbow. Depends how deep your pockets are.
The Pulsars are festooned with pointless electronic nonsense that you don't need for shooting, like video record connections. I like the idea of digital NV that cannot burn out and can be used at dawn and dusk and I think the technology has huge potential, but the Pulsars feel very much like first attempts and somewhat gimmicky. If I was buying now I'd go for an objective add-on.