100yd benchrest (Savage BTVSS) - SK+. It's about 97% reliable. In other words, expect about 3 fliers, maybe 1.5" off POA, per 100 shots. The other 97 are right on. Not ideal, but still good and way cheaper then Tenex, etc.
50 yd silhouette (Savage BV) - Fiocchi Standard. Cheap, good accuracy, no misfires.
Pistol plinking and general target practice (Ruger MKIII) - Winchester 333. Cheap, works well, clean. American Eagle also good, but a little costlier.
Pistol plinking and general target practice (Beretta T97) - Blazer or Dynapoint. Both work well and are cheap. The T97 is a little picky about ammo. Does not like Am Eagle.
"Heritage" rifles (old Mossbergs, Nylon 66) - They'll shoot almost anything, but I usually use Am Eagle SP if I have any.