hi muir , I have a 452 in 17hmr and must say its accurate , if as accurate as your wmr im not sure , but there's no doubt CZ have the accuracy sorted . Anyway folks fanfare toot toot , Done it gone and got a 512 in wmr , my nerves would not take anymore waiting and With No 12 week wait I got it . Its new , in stock , on sale at a lot less than what I have been quoted , but not threaded but that was the case for all of them even if I had waited . Got it from valley arms ????? before I get all the horror stories about them if there is any , the chap I dealt with was fine the larger of the 2 main guys well , mr nasty attitude just glad I got the taller chap who did step in as I closed the lid on the box and regardless of a 1hr 45min each way trip I would of left it and walked out . Anyway back to it horror stories or not they have a 3 year warranty and as ive said EDGARS are just around the corner from me and there's two CZ stockists 8/10 miles north and south in fact east of me so i'm not worried about that , With a 10rnd mag to me its got a bit of a AK47 look about it and the more I handle it the more its growing on me as at first I thought they looked to much like a shotgun also big and bulky , but holding one yesterday I realised size wise they were more refined dainty than what the pictures made it out to be , all in all im pretty pleased with it and the price it was but as always proof is in the pudding when I actually fire it tomorrow , So thanks to everyone for all your help and reassurance as without it I most likely would of gone safe and got another b/a , I hope its another useful tool in my collection , atvb gerry