Crap, great timing on this thread, i have a 15 twist 6" octagon barreled 500 Linebaugh on the way, was figuring on 1100 fps with someones version of a 0.512" dia. 450gr Keith bullet with a 0.400" meplat, and a big 0.513" dia.530gr LBT WFNGC with 0.410" meplat at 1000 fps, may have to lean on both a little more for good accuracy and straight line penetration.
