Your primary concern (I hope you agree) is to make an accurate shot. Thus you need to let your rifle tell you which bullet/load it shoots best. Spend a few dollars and purchase several brands of ammo having the bullet weight (150, 165. etc) you want. Then shoot 3-5 round groups with each brand. Might clean the barrel and shoot some more groups. It will become obvious which bullet is more accurate in YOUR rifle. Once you settle on a brand/type and grain bullet, you could even return to the store where you bought the first box and get 4-5 more having the same lot number. Then you will have sufficient rounds to last you for YEARS (shelf life on todays modern ammo is many years if kept in a controlled environment). It doesn't matter what another person shoots out of their gun. Every gun is different, and you need to know what flys best out of yours. It will take a little time, and a little money. But at the end of the day, you will have the confidence and the knowledge to take the shot. Isn't that what you want?