Here's what I know about it. The .307 Win is very similar to the 308 Win, but with a rim. From what I've heard is ballisticly similar to the 300 Savage, so it would make a great deer round. I do not know if the ammo is still in production. For reloading it will take any standard .308 caliber bullets, but because of the tube feed 94 only round or flat nosed would be wise. I believe that Winchester came out with the round in the early 1990s, but it never really caught on.