Long Range 700:
It sounds like your rifle is shooting dinner plate sized groups. If so, I would check out the integrity of not only the scope; but also, the integrity of the mounts. If you have a Tasco or a Simmons I would replace it with a Leupold or Burris. If you have a good scope and your groups are more like three inches I would switch brands of ammo and bullets weights. I hardly think that your rifle is at fault.
Clifford L. Hughes