Perhaps someone here can give me some advice? I have a Remington Model 700 mountain rifle chambered in 280 / 7mm express, the rifle is about 12 years old. Up until last year, the rifle shot great. I was able to make 3/4 - 1 inch groups at 100 yards. For hunting east Texas whitetail deer at 75 - 100 yards that kind of group is fine with me. Last year the rifle started shooting strange. One round would hit almost 2 feet to the right, the next round would hit almost 2 feet high. It was if the rifle was shooting in a circle. Some of the advice I was told "your scope rings are loose, tighten them up" - so I made sure the scope rings were tight, which they were. Then I went out and bought a new scope. Its only a $100 bushnell, but the rifle is still shooting about 2 feet off at 100 yards. I do not know what else to try. So far I have shot 2 boxes of ammo trying to get the rifle sighted in, and it keeps hitting about 2 feet (24 inches) off. One shot hits usually to the right and then the next round hits straight up. For 10 years this rifle has shot straight and narrow. During that time my rifle and I have taken about a dozen deer. Last year a round hit high and cut the deers spine, dropping it in its tracks. Instead taking the chance of wounding a deer, I have to get this problem fixed. Until the problem is resolved, I will have to use a Marlin 336 in 30-30 - which is a fine rifle by its own standing. Any suggestions?????