I tried them in 30-06 150 grain and in 270 130 grain and they were REALLY awful. Complete explosive blow-ups on deer. I killed 2 deer with my 270 and 2 deer with the 30-06 and all 4 showed extreme fragmentation the likes of which I have never seen with any other bullets. I killed one deer with the 270 at about 300 yards and one at about 200, and the 2 deer I killed with the 30-06s were both at about 250.
But with the 30-30 in 170 grain and in the 300 grain 375H&H I had pretty good luck with them.
In all cases you get the aluminum nose fragmenting, but in the 30-30 I had good kills with exits on deer and the 375 did the same on elk and bear.
I believe the jacket is fairly thick on the 375 but that's just a guess, and the 30-30 kills were at around 75 and 140 yards and the bullet are blow enough to not blow up so suddenly as they were with the 30-06s and the 270s, maybe because they were going pretty slow at impact. Maybe is you loaded them in a 308 or a 300 savage they would not shatter, but I can't say for certain. I never shot anything with a silvertip 30 cal in the 180 grain weight.
The ones I shot were always very accurate and in one of my 270s, the 130 gr STs were REALLY accurate. Just sucked on larger game, but for shooting rock-chucks and jack rabbits they were really cool.
