I can't condense this stuff down any better than Berger did, so here's the scoop, and we are talking TRUE innovation here.
http://02b0516.netsolhost.com/blog1/?p=117
And here's the goodies in my mailbox:
The disclaimer about hunting effectiveness is somewhat funny, as if you surf the 'net you will see some pretty nasty wound shots on deer and the like with Matchking bullets. Bottom line: These kind of bullets just come completely apart when they hit, and if you want to eat what you shot, it reduces the amount of available steak substantially. Unless you're a cannibal from Papua New Guinea, it's a non-issue with human targets.
The bullet is 1/10th inch longer, which is pretty much irrelevant with bore seating your bullets. The shoulder is pretty much in the same place, so you want to re-do your bore seating calculation, but it's unlikely to be an issue. And as the Berger facts state, the exact bore seting distance is not an issue with this bullet. Thank you! Thank you! Thank you!!
Despite the labeling on the box, the BC at 2750 FPS is a staggering .933!! The BC on a normal 50 cal HPBT is a paltry .670, and on the Hornady 50 cal A-Max it's 1.05.
The closeup of the nose is significant. While Sierra Matchking bullets are damn good, the assymetrical point on the bullet, which is an artifact of the jacket swaging process, will hurt you when this thing is spinning at 130,00 RPM and the nose is generating a bunch of parisitic drag. The Berger bullets have much more uniform noses, and that will help at very long ranges.
So: Gonna wash the wax off the surface, get these bullets mechanically moly plated, and go to the range!! If or when the Obamacare Alte Volks Einsatzgruppen show up within a mile of my house, it will be a bad day for the home team.
The DW is gonna be pissed when I start aquiring parts 
I'm gonna have to order and 
)