Well 2 does and one buck dropped in their track with Powerbelts out of my Omega, 25, 100, and 125 yards this season.
two does and one buck does not constitute sufficient evidence that powerbelts perform.
maybe you're an excellent shot. maybe you choose shots wisely, and wait for broadside standing shots, and avoid any quartering shots. i don't know. i have no reason to doubt that you're an excellent hunter and shooter.
however.
i frequent a lot of message boards. i read a lot of articles. and unfortunately, i have friends that still use them. they certainly will kill deer, as most projectiles will. but when addressing bullet performance - that is, terminal ballistics - they do not perform anywhere close to the other brands that have been listed on this thread. it might never matter to you. however, i like every advantage i can get, even if i never use that advantage.
i'm sorry to be so blunt. and i'm certainly not questioning anyone's knowledge. however, the data on these bullets is not good, not good at all.
i agree with nimrod, the conical design is a step back in ballistic technology. that's well documented in more than one of my reloading manuals, so its not just my opinion.
buffalo bullets SSB's, barnes expanders, hornady xtp's, hornady sst's - they are all great bullets that provide great accuracy and construction. i've yet to test the nosler partitions and the swift a-frames, but both of those bullets are time tested and well respected in the center fire world. extremely tough bullets.