Hi There! Been lurking for a while but need to get started on building a good 700. I have a predator problem and need to be able to make shots up to 400 yards on coyotes and bobcats. I'd like to also use it on deer if it will carry enough energy out to 3-400yds. The Rem 700 I'd like to use is a .243 built in the 70's with only 40 rounds through it. I've been reading up on having the 700 accurized, replacing the barrel, changing the .243 to a 7-08, stocks and so on..... I'm a little unsure of where I should start or what's necessary to reach my goal. I'd appreciate it if anyone could point me in the right direction on what I should or should not do to accomplish my goal.