Good vid. I found out a long time ago that the .50 BMG still puts alot more Ke than the .577 TREX. The .50 BMG kicks like a 12 guage but when you get into lower KE you get a gun that almost takes off your shoulder? I don't get it?
http://en.wikipedia.org/wiki/.577_Nitro_Express
http://en.wikipedia.org/wiki/.50_BMG