I use my .17HMR w/ 20gr for Woodchucks other small vermin. The .22 mag w/ standard 40gr maxi mags works great on coyotes, but the eye or ear are my points, under 100 yards. I have shot a couple broadside, behind the leg. I like a quartering away shot. Lung and heart are mush. I've used the 30..33gr ballistic tips. Not as accurate in my book. I shoot a Browning A-bolt .22WMR, it is a tack driver. I am in Rimfire only country also.