My brother told me about Federal's HST rounds quite awhile ago, and he's having excellent results with the 147 grain +Ps from his Smith and Wesson M&P Pro:
I'm hearing now that they've been pulled off the shelf for some reason or another. I looked at ordering some more this weekend, but can't find them anywhere. Shame on you, Federal.
Hopefully one day Federal will offer the HST bullet as a component for reloading. I know for a fact now that I can get a 147 grain bullet started at over 1,000 fps, and I'm hoping I can get it over 1,110 fps with the right powder.