According to articles in the latest Shooting Times & Guns & Ammo I've read Hornady has lined up several other ammo manufacturers like Federal, Eley, etc. in addition to themselves to produce the ammo for their newest creation, the .17 Mach 2 (a necked down .22 Stinger case), using the same Hornady .17 V-max bullet as the .17 HRM. Also, Browning, Taurus, Marlin, TC & others have prototype firearms ready & the accuracy in them in limited testing is outstanding. The velocity is better than .22 mag.- around 2100 fps. Very impressive!

Ok, should be some aftermarket 10/22 bull barrels due out soon I hope. :)