I have burned up 97 Wildcat 252gr RBBTs. They were superbly accurate in my Factory REM 700 338 Win. Velocities were just over 2800 FPS @ the muzzle. Shot them at my steel full sized coyote sil. @ 735 yds and did pretty well.
The bullet is made specifically for big game hunting and has lead to the tip.
Goodgrouper and the Utah guys did some comparisons with it and the 250 SMK and Scenars. BCs etc are posted at LINK
Read it all. Its worth it.
I'm in the process of converting the Win to a RUm and fully expect to use the RBBTs in it also.
Considering the whole spectrum of shooters there aren't many shooting anything over 30 cal. That's why its getting all of the attention.
I would highly recommend the RBBTs.