I gave up on 140 gr. SST's in my 6.5-284 several years ago...
Very accurate, but tended to be rather inconsistent on game. Sometime they would be too expansive, sometimes not expansive enough.
IMO, there are better choices....
DF
SSTs have been "fixed" since they first appeared--similar to Nosler Ballistic Tips. Went on a Texas hunt with several guys 3 years ago, and we all used factory .308 ammo loaded with 150-grain SSTs. Killed 20-some deer and pigs, some weighing 200 pounds, and never recovered a bullet, even on angling and double-shoulder shots.
On the other hand, the most erratic 6.5mm bullet I've used is the 160-grain Hornady roundnose. When started at 2150 fps or so in my Mannlicher-Schoenauer carbine, it did everything from break both shoulders on deer and exit, to come apart before reaching the far side on behind-the-shoulder rib shots. Phil Shoemaker had the same basic experience with that bullet.
