federal gold medal sierra match king .224 valkyrie was one of the original four loads offered by federal premium ammunition. the 90 grain sierra match king has a very high ballistic coefficient at .563 g1 bc and .274 g7 bc because its very heavy (and thus long) for its caliber. this high bc allows the bullet to resist wind effects better, while its mass makes it retain velocity longer. it has a rated velocity of 2700 ft./s. the 90 grain sierra match king had a rough launch however, with inconsistency in the ammunition produced by federal. to federal's credit, they have since rectified the inconsistency problems with a second generation 90 grain sierra match king load which seems to have fixed the problems with the previous generation. this round is intended for use in prs (precision rifle series) and similar small frame ar rifles.