I have a Remington 700 in a 270 Winchester. I did not know about this site at the time, so I sent it off to a gunsmith I had never heard of, who seemed knowagable about accurate firearms . He put a Lilja barrel on it, McMillan stock, beded the action. I got it back and the bolt would not close, so I called him and he told me to grind off the front action screw and that should do it. THIS told me that he never even test fired it. Surprisingly, It will shoot about a 1/2" group, but the next time out I shoot it, it will shoot about a 1/2" group but in a different place, maybe 2" to the right and 1" low. I want an accurate rifle. Do I need to keep working with this Rem 700 action or get a custom action. Which is better, and how much better in terms of accuracy. Thanks for any help!