Originally Posted By: Eric_MayerSince you are targeting the larger end of the varmint spectrum, I would go with the 17WSM, and 20 grain bullets (better performance with the faster, lighter, bullet).
Eric
I 100% agree with Eric. BUT, I believe the 17 WSM is marginal, at best, for killing yotes but if that's all you have, then that's all you have and though I believe it's not a "good" choice the WSM certainly has more punch than does the HMR.
Also, FWIW, I've got both a WSM and a HMR and if I had to buy the one that was going to be the most accurate right off the shelf without having to do anything to it, it'd be a CZ in 17 HMR.
The Ruger 77/17 WSM nor the Savage Bmag is known for being an off the shelf one holer. In fact, they often shoot rather poorly out of the box. Now, if you're willing to spend some extra money on them they can typically be turned into very good shooters. My HB SS Bmag shoots unbelievably well now but I also spent an extra two hundred bucks on it too, so if you are looking for something that shoots real well right out of the box, I wouldn't recommend the Ruger or the Sav. Bmag in 17 WSM.