I had a very nice 4 groove 03A3 from the CMP. I would shoot 2 feet left at 200 yards. Had several guys look at it and we thought the barrel was slightly bent. I took it to the Western Games in Phoenix, Az and the CMP armourer decided it was bent. CMP took it to Anniston and rebarreled it with a 2 groove barrel. You may well have the same problem.