I just started this last year to put more time into hunting crows. My weapon of choice now is 17 Mach2. I've called in dozens at a time on a good day and get to shoot 3 of them when they land over about 35 minutes.
I tried the year before with a shotgun and my success was far less stellar...
Agreed....for bow hunting ARC is not an issue. For longer distance hunting I can see it being helpful. I bought the Leupold with TBC or something like that, it also has a mode that tells you the dial up for your load if you find one that works on it.