U might like this story CF. A hunting partner of mine built up a tight-necked 270 WSM couple years ago on a Nesika Bay round action and some big barrel of some make--can't remember now. he put an 8.5-25X VX-III on it too. I was elected to take it hunting the 1st time, after i was supposed to work up a load for it that shot better than his (i didn't--his already shot pretty good i thought). I zeroed it in on a prairie dog, and used his velocity for a drop chart i just printed and took with me a couple days later for some long-range testing on rocks,etc. Mom was with me this day (she likes to spot and shoot some--even at 70y.o.), as it was too nice of a day for winter. After we got to the ranch, we walked out to a low ridge that overlooks a huge shallow prairie basin. I'd brought my howler with me just in case, and before we got started shooting i let out a howl. A little scanning with my binocs, and turns out we'd raised a mange coyote out of it's bed. He was quite a ways away but was skirting our position to try and get downwind when he ran into a herd of bedded antelope. They gave chase to him, and he hightailed it out of there. They gave up the chase, and the coyote started to slow down. I was ranging the dog, trying to get mom onto him, and trying to run clicks all at the same time. He finally stopped walking and turned to look our way standing on a little rise. I got 775 off the Leica, and ran the addtl. turret clicks in--no wind. Got set up ASAP behind the big rig, and touched it off. The gun recoiled just a little (this is a BIG rig, and probably weighs 15-18 lbs. or so), and came back down onto the legs of the Harris BR pod, and i watched the dog fall over DRT. There is no better thrill in the shooting sports IMO than spotting your own successful long shot. Turns out the 140 BT hit him in the chest and appeared to exit a little out his left rear buttocks. He was manged bad and couldn't tell much. I'll never forget that shot.
I'm gonna be getting Holland's ART reticle installed in my 8.5-25X Mk. 4 soon that's on my 6.5 WSM XP-100 HG for sniping those LR dogs.