SuperVel informed me they do not manufacture their solid copper hollow points, but purchase them from the manufacturer, which they said is not Barnes. Who else actually makes these solid copper bullets? If anyone knows....
There was a company called Copper Only Projectiles COP, they were similar to the Barnes TAC-XP.
The Copper Only Projectiles aren't as expensive as I thought they would be. 50 for 16.79. but looks like several of these have been discontinued? Another fascinating company is Cutting Edge Bullets, but appear to be quite pricey, 50 for $63.50
https://cuttingedgebullets.com/400-150gr-handgun-raptor
https://youtu.be/JxE_s9AyHKg