I've got an old Winchester M70 SA HB .308 that's had a lot of the upgrades common to the USMC's M40A1, and I love it pretty dearly. It's one boringly accurate stick and I don't have $1300 tied up in it.
I found the rifle at a gun shop in Seymour with a very low round count. It's got the heavy synthetic stock and a factory 26" stainless barrel. I fitted it with a canted Picatinney rail base, heavy 6-screw rings, and an SWFA 10x42SS scope. M118SB and Federal Gold Medal Match are relatively easy to find, and this outfit does a "passable" job with either all the way out to absurd range.
One of the best shooting rifles I ever owned. The early one I had had a dished crown. Groups halved after it was cut to 24" with a nice crown. Awesome rifle and better than 15 years since I sold it and still kicking myself...