l have recently been loading/shooting 60gr Hornady SPs in my little Rem 700 VLSF in 221Fireball... lt took me awhile to find 221fb/60gr Hornady load data.. l finally located it in a most unexpected location. ln Hornady's Loading Manual 3rd edition from 1980. lt was for an XP100-close enough l felt. l had bullets, brass, powder specified in the data... l used CCI srp for the spark... Data stated IMR 4227 was a good powder starting @ 12.9gr with 15gr being MAX... l chose to start in the middle with 13.8gr in Remington 221FB brass... Off to the range Friday l fired 3 disappointing 3shot groups at 100yds of around an inch... l thought about changing powders but the only other powder listed close to what l had in my powder cabinet was AA1680... Powder in book was Win680... l wasn't prepared to make that substitution just yet... l chose to simply add ONE MORE GRAIN. Put me to near MAX @14.8gr.. Back to the range l fired 2 more groups with 13.8gr.. They were both close to 1 1/2''. Worse than Friday's groups... Then l fired 3 groups @14.8gr... Hit a home run with those.. My last being a satisfying .376''!! l don't think this too bad for a basically STOCK gun... Only addition being a Shilen trigger... After the math was done the 13.8gr loads/groups avg was 1.221''... That extra grain shrunk the groups down to .539''! That's less than HALF