That cartridge is very accurate and you'll like it. I had mine done in '87 or '88 and at that time brass had to be made from 7mmBR stuff because that's all there was. Neckturning was mandatory. Today you just neck down 6mm brass, which isn't difficult. That's about it. The 22BR just loves to shoot little bitty groups and finding a good load is easy. With my gun shooting 50's, accuracy is anywhere from 3700 to 4000 depending on the powder. It's fully the equal of a 22-250 and much easier to find a fast load that shoots well. I'd say buy the gun if it's reasonably priced.
Edit: I was writing when DAA posted. I needn't have bothered because what he said pretty much sums it up. His gun is very effective on pd's, I've seen it shoot.
