Folks I need yalls thoughts on biulding a long range rifle on a stevens 200 SA. The caliber is going to be a 7-08. I know that there may be better choices but this is what I want. I want this gun to be the most efficient it can be at the farthest range possible for that caliber. It will be used as a deer rifle at distances out to 350yds but I want the gun to have the capability to reach out to competition distances if I choose to try that in the future. So what I need is your suggestions on barrel length, twist, contour perhaps, and optics. Thanks in advance I'm looking forward to reading what yall have to say.