I have a Remington 700 in 7mm mag that I have always run Remington Core Lok ammo through until last year. I bought a box of Federal Fusion on a tip from a friend. For a factory load they group extremely well but I am interested to know if anyone has had experience with them on deer (especially mule deer - they are slightly tougher). I shot an antelope last year with one at 150 yards and dropped it in its tracks, but I went right through the heart. When I took it apart it it didn't look like much damage and the exit wound was as clean as the entry so I am concerned about expansion. Would love to hear comments good and bad.