This debate has been going on for a while now, google it and you will find a lot of information (sorry for being a d*ck). I personally prefer the 17 HMR the 20grain which is the slowest of the 2 rounds it is offered in is still faster then the fastest grain .22WMR is offered in. HMR is ridiculously accurate and not just compared to a rimfire, and it is a flat shooting round. Personally in Toronto I do not have any problems finding both rounds for sale, and the difference in price here is HMR is only 1 dollar more. Both are hard hitting rounds, but HMR turns stuff inside out, the only thing WMR people can argue is the terminal velocity is better... I am a youngin so HMR has always been around the older guys cant seem to move away from WMR... HMR is the way of the future......
FLAME suite on, HMR ROCKS WMR all day anyday!