Mine likes just about anything. i sighted it in with 20 grain hp's then went to the store to get more, went out hunting and had a skunk at 100 yards shot 5 times and missed. when i looked at the new box they were 17 grain polymer tips. :-[ next day shot a ground hog at 150 yards aimin 2 inches low lol. moral of the story, try to use the exact same ammo when you find what works best.