Nosler Parts are a excellent bullet and I have found over the years most rifles throw them pretty good as well. Trying a box to see how the fly will not affect your Corelokt load or season in any way. Just shoot them to see what kind of group you are getting and if you like what you see, then fine tune if required! Don't worry about their performance on the game end with the 160's they'll take down most NA game with ease.