I'm confused about this "new" bullet technology. In what way are these bullets better?
They certainly don't mushroom better, so it could be argued that in this they are not better.
Unless striking heavy bone, they will pass right through like any solid. Better? No.
Risk of decreased barrel life or damage, real or perceived. A good attribute? No.

So, can anyone with experience shooting these and regular FMJ solids with comparisons in on-game performance give us results outside of the theoretical realm?
How can we accept that tens and maybe hundreds of thousands of one shot kills on dangerous game in the past century were in any way accomplished with "inferior" bullets?

I must confess, I am firmly in the "if it aint broke, don't fix it" camp. For me, this applies to my guns, chamberings, and the ammunition. IMHO, there's not much in the post-war (WW2) hunting world which I would classify as measurable improvement in killing performance. Powders may be just about it...

Back to the topic, can the solid brass bullets be annealed to make them a little softer?