Its not original RM ammo. That had large pistol primers and is very easy to identify. My guess is that its postwar, but still very collectable. Keep it, don't shoot it up.

The lead bullets did tend to foul the bore due to the high velocity and the fairly soft lead. Just not a problem.

Someone else needs to ID the time frame of the box. I've never seen a book that identifies boxes and the times they were produced. I've always gone back and dug out old American Rifleman magazines for the ads, using them to approximate the years. The problem is that Remington and Winchester didn't always show pictures of boxes in the ads.

TN always used to put tax stamps on their ammo. Living fairly close to them, we saw that on ammo for years at gunshows. Many vendors either came from there or bought ammo from that area. All it does is tell you where it started its retail life.

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Dick Burg