RE: 200gr. Shockwaves
I've shot the 200 grain shockwave/SST (same bullet) some, though out of a .45 cal. inline. It's easily the most accurate bullet out of my rifle - best 3 shot group at 100 yards was just over 1". Average groups are about 1.5". I've shot 1 deer with them- it was a doe that had been hit by a car and I put it out of its misery. 95 grains 777 + 200 grain SST at 5 yards - complete pass-through on the deer's chest and it expired after a few seconds.
I think Spaniel and Lane Nebraska use the 200 grain shockwave a lot- they probably have more stories to share. In the .45 I use the supplied sabot, but if you're shooting out of a .50 I can't tell you what to do. Overall, I think it's a very good bullet for deer-sized game. I'm still using the 200 grain XTP's though, because they're cheaper and I still have a big box of them to shoot up.