145 grains, made by Nosler.I've seen that air rifle in action, it is a total beast. I'd love to own one.
But does it really, and humanely, take down large game? The grain weight of the pellet can't possibly be more than 30 to 50 grains.. (just guessing)
http://www.pyramydair.com/s/p/Benjamin_Nosler_Ballistic_Tip_eXTREME_Air_Rifle_Bullet_357_Cal_145_Grains_Round_Nose_25ct/889