The Rave is.. it's intended for the AR15 platform, so you can just swap an upper and a magazine and bada-bing you're "off to the races".
Like I'm saying though... reading directly from Hornady, they themselves stated approaching .22-250 velocities.
Then the other day, I'm in an LGS... and since I've been considering getting a second .22 cal centerfire so both my son and I can be out together for yotes, I decided to checkout a box of .22 ARC, from Hornady. Giddy I'm expecting .22-250 velocites... only to see 3050 fps? Wa Waaaa Waaaaa....