Put it in the bank for something bigger and better than a plain old Soviet era refurb if you can't find one you like. But there are many options, so you shouldn't have a problem finding anything. Sounds like money well spent already!
Ammo is better than money in the bank.
It increases in value.
You can buy it today and sell it tomorrow for money money(literally tomorrow if you are a good salesman0
If SHTF, you can use the ammo and it will increase drastically while your paper money is worthless and or banks not open.
SHTF in Ukraine and US is likely to trade embargo russia.. meaning 54r is going to be getting expensive.