I have a unfired NIBWinchester Model 70 chambered in this round.It's supposed tobea great long distance round.The 264 would have been a much more popular round if the 7mm Rem Mag hadn't been introduced. I think without looking it up they came out pretty close to the same time.Seems to me it was in the late 50's.

I would highly recommend you have the barrel checked out before buying it. I have a old Speer reloading manual and it says that the 264 Win is very hard on barrels. It says reports that barrels have beenshot out in as little as 500 rounds,declining it's performance to about that of a 270 Win. I have that here in Black and White in that manual,not something I'm making up.