I have a remington 700 7mm-08. It has a 24 inch barrel with an x-mark pro trigger. The optics are a Leupold VXII 3x9x40, held on with Tally bases and rings.

Today was the first day I have had a chance to shoot the gun. I have a box of hornady Superformance 139gr sst's. I am not so sure the gun likes these bullets. After 3 2 shot rounds I noticed that my first shot would shoot about 3 inches high and the second would shoot dead on. Shoot another 2 rounds and the same exact thing. Third round same exact thing... I had three shots 3 inches high and 3 shots dead on. Does it sound like a bullet issue or weapon issue or both..

Are there any other bullets I should try next? I can get federal fusion, core lokts and, winchester power points...