Same here, Winchester Super-X. I'm still working on a couple of cases I bought many years ago.
Wolf Match Target also shoots great, but it shoots great in everything.
The bulk stuff, Winchester Wildcat and so forth, won't make such pretty groups as the two mentioned but the Ruger still shoots them plenty good enough to hit the 6" ringer consistently at 50 yards.
Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!