I asked Barnes and was told 1800 FPS is the minimum. I tried a few and got decent expansion. I prefer to keep them 2200 or so giving my druthers.
I have tested some with the bigger hollow points and got ad copy expansion out of 357 125 grainers at ~850. 1300 out of 150 grain TSXs and 1600 out of 150 grain Xs in 30-30 loads. The 150 grain Xs in 30-30 probably would have opened slower, but I didn't try any slower. Muzzle loader Barnes bullets will open pretty far down as well.
The 120 TTSX at 3,000 ft/sec MV keeps above 2200 out to close to 350 yards, more than enough for my application.
P
