I just ordered another 440 rounds of 7.62 x 54R (Russian) myself. I’m short on .22LR and .38 Special right now.
I guess I need to start buying in larger quantities. My kids can go through a 500 round brick of .22 in a two hour visit to the range.
May I ask what you are using that 7.62 x 54R for?
My son has an m44 and a romak III psl/fpk that uses that stuff and WOW.