I recently bought a Rem 700 SPS Long Range in the 300 Win Mag. Took it out Sat just to shoot it. Not sighted in yet so I was just shooting a dirt pile. Ammo is Hornady Precision Hunter, 200 grain ELD-X. First 2 rounds were fine. #3 was hard to eject, 4 was a little sticky but not terrible. 5th round stayed in the gun for several hours after I got home. Bolt comes up fine, just couldn't pull it back to eject spent casing. Finally got mad enough and pulled as hard as I could. (bout gave birth to my colon) finally got it out. Gun was cleaned very well before it was shot. I noticed deformities on 3 of the cases on the neck. So, the mystery is....was this caused by the ammo, or me having to pull so hard to eject some of the rounds? What could have caused them to hang up? There were no splits or burn outs on the case. Just a flat spot on the neck. Is that rifle going to be very ammo specific? I surely hope not. Ok experts, what's the deal here?