Am in possesion of ,and handload for the 307 Win. With the Winchesters heavy barrel, it is extremely accurate when scoped. It does very well with Speer's line of jfps, 130, 150 and 170 grains. You use commonly available 308 dies to reload/hand load for it. See shops asking 600-800 dollars for good to ex examples of em.
Using the Speer jfp bullets, Win 748, Fed 215 primers and published data:
130 at 2850 fps
150 at 2600 fps
170 at 2400 fps