Buy it or don't.
I'm not trying to sell it, and I'm not getting into caliber wars.
I AM, in response to the original post, mentioning the test results I got with this load, and discussing technical aspects.
It's a new adaptation in using a jacketed mostly-flat-nosed HP, which can be driven faster than the old soft lead wadcutter.
It's seated mostly flush, to reduce internal air space & keep powder burn more consistent through a variety of different angled shooting positions.
This is actually a valid concept.
It does maintain decent velocities through a short snub barrel, traveling faster & with more terminal energy than a target wadcutter in factory ammunition.
It does, based on limited water-jugging, expand & penetrate well, a good combination of two desirable features in a defensive load.
Aside from handloads, which are not the subject of this thread, show me similar velocities, expansion, and penetration in a FACTORY 148-grain lead full-wadcutter load.
Even show me a factory-made reversed wadcutter load that can match the HST in performance.
Even if we open up to handloaded reversed wadcutters, show me the results of accuracy, velocity, expansion, and penetration there-of, and then we can talk further.
If you don't like the HST, move on.
We've discussed it technically here, because some ARE interested.
If you're not one of those, no need for you to pay any more attention.
And another installment of "Which Caliber's Better?" also has no place in this conversation.
It'll never be resolved & the original post's question didn't ask it.
Denis