Mid South is selling Norma 7.62x53 cases. These are the same as the 7.62x54R. They come in boxes of 25 for around $23,75. I don't recall exactly but I do recall the price per case of $.95.
I have plenty of brass myself so I thought I'd pass this info on to others.
Leo

I always used Lapua when loading for my M39 Sako. Miss that rifle. The Norma brass is probably close in quality.

I was looking through my brass selection and decided Maybe I ought to buy a couple boxes.
I went to the site and they only had 1 box left. I bought it.
I also bought a box of Sierra 180 SP's to load in that brass.
They do have more of this brass. boxes of 100 for $140. That does seem a bit costly at 41.40 per case.
Leo

If you find Boxer primed, better buy it.

Grizz