I was just doing the tables on the .17HMR...it's probably going to be too light for what I want to do.
Using my chrony to test it out I was getting about 250ish FPE at the muzzle with a down range at 100 yards being just around 100 FPE...so at 100 yards it's about the same as a normal .22 rimfire at the muzzle. That light little bullet really sheds a lot of energy fast...and it really doesn't look like the .17 MACH2 is going to be any better....

Thanks for all your help...I think I'm gonna go with something a bit more potent. I will say the .17 HRM does wonders on crows.... pop...PUFF.....