I recently purchased a Remington 700 .308 5r milspec. Once the magazine is fully loaded (4 rounds) the bolt skips over the cartridge instead of grabbing and feeding it into the chamber. It leaves some pretty good scratch and gouge marks on the unfed casing, and has no problem feeding each round after the first... I thought that the spring might be too strong, being brand new, but after working the spring and loading about 200+ rounds through it I still have the same problem, that first round will not feed... Any suggestions?