Someone needs to load one at 10mm speed and gel test it.

These Black Talon have an exposed lead base and i see that as part of the issue for driving them at the upper limits of real 10mm.  Had the used a bonded lead core, they may have held together better to prevent core seperation.

Are bonded bullets better?

They tend to hold their total weight as the expand or even over expand without shedding petals off, one of the things that make the Gold Dot's a good choice as a defensive bullet.

This thing loaded 1180-1250 fps would be great. I'm surprised they didn't have it loaded a little better. Their silvertip line of 10mm was always warm.

I think I have four boxes here somewhere.

Not high impulse  for sure.  But no flash in a dark room.

The gel test speaks for itself.