We tried the winchester 333 bulk in our 1522s. It was not good- several ftf.My son tried it with his davy crickett while squirrel hunting a couple of years ago. After 4 ftf at the same squirrel, it got away. Son was mad, dad was snickering, squirrel was happy. Needless to say no winchester ammo in our household. Nothing but cci and federal hollowpoints for us.