I like the idea of the rounds but the .243 is already a short mag. Coming from a .308 case that makes it a short mag.I love seeing gun makers and ammo makers try to keep us as buyers interested in there product. So I cant say that you .243 wssm will be here long but it is a cartridge and not abit behind any of the other .243 based rounds. So if you like it shoot the hell out of it if not and not shot maybe they will work out a return for a .243 .