Hi, Gunscribe:
Some webstories indicate that Winchester manufactures all the .17WSM ammo and it's rebranded by Federal and Hornady. I don't really know if such is the case; it's just what I've read online. And by now, Federal should be making their own branded ammo, IMHO.
My rifle is the thin Sporter barrel.
I have heard that the early .17WSM ammo was somewhat inconsistent in quality, especially respecting powder load variations, which caused some wide velocity variances and a lot of vertical stringing. We'll see how mine turns out. Got my ammo for $10/box from an Armslist guy, so it may be from ammo lots of early vintage.
I did get some Weaver scope mounts for the rifle at WalMart on Friday. Being a tightwad, I bought the Extra-Hi for $10 vs. the same mount in Hi for $22. Can't figger that pricing. Anyhow, buying the Extra-Hi was a stroke of luck, because it just barely avoided a conflict between bolt handle and scope body. This scope mounting was the EZiest that I've ever done. No dumb mistakes that required redoing. 'Bout time.
Today the gun will be rough-sighted in at Omaha Gun Club's 50-yard range. We'll see wot's wot.
Hope all is going well for you way out there in the Land of Enchantment.