PNW Arms manufactures high quality ammunition for handguns, subguns and rifles. They are currently offering three loadings in 300 BLK: a hunting load, a match cartridge and a subsonic round.
The hunting load uses a Nosler 125 grain ballistic tip bullet with a muzzle velocity of 2200 fps. That works out to be about 1343 ft-lbs of energy. Pricing on this 300 BLK load is $22.99 for a box/20.