We have 22-250s and 223s that we can use out to 4-500yrds. My hunting partner has a 25-06 and a 7mm that he's playing with on 5-700yrd targets. I've been looking at ballistics charts and have a handful of cartridges that look like they'd make awesome yote killers. 260 Rem, 280 Rem, and 264 WM. look pretty good on paper. Any input on them?