I am using 87.5 grains of Retumbo w/ the 230 OTM . Getting 2875 f.p.s out of a 26" barreled Montana rifle company 300 RUM. Dialing 22.5 MOA to get 1000 yards.
Still has 1700 ft/lbs. energy @ 1000 yards !
Have shot a couple of mule deer @ over 500 yards w/ this set up & it really flattens them...