I shoot the 245 grain powerbelts in my optima. It seems to do very well with them and 100 grains of powder. A word of caution about the hollow points. I shot them first before trying the aerotips. And, dug one of them out of the dirt bank at 100 yards and could have put another base on the bullet and fired it again! It had no noticable expansion not a scratch on it. That is why I shoot the aerotips.