My 721 likes H4831SC and 180-grain TSX's, both 4831's and 220-grain Partitions or Hornady RN's, IMR 4350 and 150-grain Sierras. 200-grain SPEER load was good but too hot with same amount of H4831SC as 180's [70 grains]. Hornady brass is nice, hate Remington brass and W W or NORMA are okay. Partial neck resize to keep brass life longer...
