Checked out the replacement magazine last time out, while sighting in at 25 and then 50 yards. The magazine functioned flawlessly with cartridges containing 158 gr. XTPs. Today, got serious with 180 gr WFNGC bullets ahead of 13 grains of H110. The new magazine functioned flawlessly with these rounds too. Fired two magazine loads into a 3½" bull at 50 yards, with no change to the sight setting from last week. The rifle is equipped with a Tasco "World Class" 3x-9x, mil-dot reticule scope, and a Caldwell bipod. I am thoroughly satisfied with the setup, the rifle, the cartridge loading, and the weather was pretty good too. I was interested/concerned about bore leading with the bullet & loading. No sign of it. The Hornady manual 'suggests' (that specific combination of components isn't covered) that I was using a maximum load. The Lee manual considers it a starting load. The Lyman manual apparently considers it too puny to mention. Hah! Hey, as long as I'm happy, eh?