I want to build me a custom long range tact driver Remington 700 has so many options, or do you think mod 70 with controled feed is better. Who do you think does the best afordable rebarrelling, I have been trying to find out more about Pac-nor. I would like to put the rifle together for less than $ 1200 not counting action. Last has anyone had good luck with the burris tac. 30 thyx