140 gr. SST's in my 6.5-284 at 2,950 fps are about perfect regarding performance. In my .240 Wby, I'm going to try some 95 gr. SST's but at speeds >3,400 fps, a tougher bullet may be called for. Just got in some 90 gr. E-Tips, 100 gr. Part. and 100 gr. Speer Grand Slam's to try.
So, with SST's, I would think it's all about how fast you're driving them. I think they're pretty tough cup and core bullets compared to some. From what I've seen, tougher than NBT's, for example.
DF
