At 40000 I think your uncle got a good deal. Though I didnt know of Remington manufacturing a .315, then again I am not wikipedia.

Yos sure its not in 8mm Remington Magnum or some such caliber?
I somehow thought that the .315 was unique to India.
follow
this link and see for your self from the horses mouth.
I havent got a remington in my collection currently, but did have a 700 in 7-08 which was a decent rifle. The standard stock does not have the barrel free floated, and once in an aftermarket stock would shoot sub MoA. However some of the other calibers I shoot are a lot more accurate, so I got rid of it.