Or you could find a 5mm Remington mag and have the baddest rimfire on the planet. Ammo s availble again, with a 30 gr bullet at 2,500fps. It died a slow death back inthe early 80's.... But thanks to Agila/Centurian it is avilable once again. I am quite sure Steve Hornaday had one of these in his rack when he dreamed up the 17 HMR. His runs at 26,000psi, same as the 22 mag. The 5mm on the other hand runs at 33,000 and takes a special bolt action to seal the chamber to prevent cartridge rim bursting. The rifles are Remingtons 591M and 592M. They are out there to be had. I also have a contender in 5mm. 10" barrel and 2,100fps is hard to argue with!