I have done few terminal test each with the Barnes 225gr XPB and the Lehigh Defense 220gr Penetrator. They are functionally almost complete opposites.
My biggest problem with the Barnes, first and foremost is that i could never achieve the velocity desired. I do not have the data in front of me, but I seem to remeber about 2250fps was my max with H4198 and maybe close to 2400fps with AA1680. I do not like using AA1680. A person can achieve higher velocities with AA1680 but velocity spreads are extreme. So much so, are the extreme velocity spreads, that if you are working near max velocities, you'll get random spikes that will be in the red zone. I have determined that the velocity gains with AA1680 with lighter bullets in the 444 are just not worth how spooky that powder can be. So, about 2250fps is about as fast as I can push that bullet from a 22" barrel. That is about 500 ft ibs of muzzle energy loss compared to top loads with jacketed lead core bullets.
My second problem with the 225 XPB is that it dump a tremendous amount of energy on initial impact when fired at 444 velocities. The bullet is designed to open 4 petals. It performs well at lower velocities, but at 444 velocities those petals blow off on impact. The extremely deep hollowpoint continues to expand and does create a decent sized frontal area (around .755", if I remember correctly). When fired at 444 velocity, all that is done on impact and wound cavity tapers off very sharply.
Here is one of the tests.
The Lehigh Defense 220gr Penetrator forces me to view terminal performance through a different prism. I always view terminal performance through the perspective of hunting. One must recognize that the Lehigh Defense Penetrator bullets are a tactical bullet more than a hunting bullet. We generally do not think of "barriers" when we are thinking about terminal performance of hunting bullets. I have done tests using bovine shoulder bones, but that is as close to thinking about barriers as I have gone in my tests. The Lehigh Defense bullet is a tactical bullet and as such, is designed to penetrate through metal, glass, concrete, etc. For that reason it has almost zero frontal area while still having a structurally strong leading edge. The result is, when tested in water, the bullet has next to zero initial energy dump on impact. Lehigh Defense claims bigger wound channels with the Penetrator, but that is because wound channels are much longer than with hunting bullets. I'll see what I can do to get my tests with the 220gr Penetrator produced and uploaded this week.