My family have shot a lot of game with GS bullets since the early '90's.
100grn in 6mm Rems
145 and 160's out of numerous 7mm-08's & 7X57's.
165 & 180's out of few .308's & a 30-06
225's from a .338-06.

Never had a single time that we thought the bullet mis-behaved, though we've had funny things happen with Sierra, Hornaday's and "early" BT's.

I haven't been able to tell a performance difference between the old style and new style yet.

Wouldn't be my choice for any kind of distance shooting though. They are kind of like a brick for BC. grin