Locate, conceal, and call.
That may sound overly simplified, but it really isn't. I hunted wolves a long time before I shot one, and the day I did it was almost inside of one hour from start to finish.
Previously I had walked for miles and miles posting up on vantage points and calling overlooking miles and miles of empty Alaskan swamp.
Previously i had worn my carhart insulated bibs and a my big, black mt. hardwear down jacket, etc.
Previously I imagined a walmart distress call hadn't been blown in every swamp within 5 miles of our few roads.
Last year, I had full snow camo covers, face mask and hat, built a scenario with howls, magpie calls, barks, etc. and started my hare distress calling sequence
AFTER I knew I was within a few miles of some wolves. I could hear them howling, checked my maps (phone) and found a likely spot they would have to funnel within about 75 yards of me, set up and started calling.
After I realized they had heard my calls, I kept up the audible "scene" up for over 30 minutes with breaks and logical sounding sequences. I was backed up against a tree for almost 50 minutes before they rounded the point of scrubby black spruce. Of the pair that came in, at about 200 yards, one split off on a hard 90 degree turn into some trees while the other one came on. (I'm certain in an attempt to cut off escape.) So keep that in mind if there are two+ wolves and you have your eye on a particular one, at some range it might disappear in attempts to flank your dying "critter".
I shot the smaller of the two at about 125 yards. (the non-flanker) After so many years of calling into space, it seemed almost silly to have success calling at something you know is there in such a short amount of time.
I guess it's like grunting into the forest after deer... Much better if you can actually see the deer.
As far as hardware, think antelope/texas deer calibers/loads*. I used a 95 grain, bonded 6mm and wished I had a little more energy transfer but one shot was all it took. I've since acquired a 6.5 Creedmoor and think the 120 grain amax is perfect for wolves. I also used to think I needed a ultra precision rifle to hunt wolves. Proved that very wrong with my trusty, but accurate, Stainless MkII .243 Win.
.25 anything, 6.5 whatever, or .270 with a 100-130 grainer that isn't to well constructed would be and is my choice.
*Keeping in mind the coyotes in Alaska are taller than Texas whitetails...
