I've only shot the 300gn TSX at paper, and they shoot accurately in my CZ. They do copper foul my barrel something fierce. I've only tried Woodleigh and Tiapan 350gn RN, once again at paper, and they shoot very accurately. I hope to try the Taipans on pigs on day (they are supposed to be a relatively "soft" projectile). Like Daryl said the 300gn is the more commonly assocaited weight with the 375. I'd never even thought about the 350gn but bought a part box of Taipan 350s at a gun show a couple of years back (cheaply of course) and they shot like stink, so I tried some Woodleighs and good the same good accuracy results.

I haven't had the impressive groupings that Daryl has but the 350s will do MOA reliably. I once shot a 3/4 MOA 5 shot group @ 100yds and 1 MOA group @ 200yds with the Taipans (I went out and bought a couple of hundred after that).