Fiftydriver and others, What would you use for a long-range, varmint (coyote/some mixed varmints) to deer cartridge, if you already have a 270, 300 mag and other big game rifles? I'd prefer access to factory cartridges in a pinch and I'm thinking about: 6mm Remington AI or a 25-06 or 25-06AI and a 24" barrel? How about just using my 270 Win with 110gr Tipped TSX bullets for the coyotes (less fur damage?) and pronghorns? I'm really curious about your experiences with the 270AI! Sounds interesting and would look neat. What would you expect the velocity gain to be over the regular 270 win. if you limited both to 22" barrels (for light weight). I'd do that if I could get a 140-142gr. bullet up to 3050 in a 22" barrel? Is this practical? My practical hunting ranges are 0-600yards or so. Not looking for a heavy set-up...more a mid-weight sporter varmint/deer/pronghorn hunting rifle, 22-24" barrel with a cartridge such as above that has velocity and/or high BC to prevent too much winddrift.