Thanks DZ.. Im giving serious thought to building the caliber, as is i can use a 150gr XBT with a BC of 529 and push it about 4400 fps, she will drop only 116" @1000 yrds if zero @ 100yrds, and still be traveling 2x the speed of sound, and with a 10mp cross only a 40" drift. Im getting excited thinking about it,lol.