Currently, the . 17cal has taken a bad rap due to Remington's failure in their 597s to handle 17HMR ammo. That, combined with high price of ammo, and economic "downturns" have made the Mach2 somewhat less desireable. Mach2 ammo is not considerably cheaper, as is the case with . 22LR versus . 22WMR, and the performance gain with the 17HMR is considerably higher for the minimal cost. I have both, myself, and can say the HMR is quite a bit more potent at a further range. But I do thoroughly enjoy hunting with my Mach2, which stays by the back door for skunks and coons. Don't worry too much about the cartridge becoming obsolete, as there are a very large number of firearms out there chambered for it, and it is fairly cheap to make. It may become seasonal in the near future, meaning manufacturers will only make short runs of it once a year or so, but I don't see it becoming obsolete any time soon.