Do you intend to buy the rifle here and take it there?
If so, you need to spend some time and money finding out how to do it legaly. Taking a firearm into Russia is very difficult to do legaly.
If you only wish to buy a rifle here and familiarize yourself with it before you go, buy an AK clone of some type and a Mosin Nagant, of which there are many in Russia.
This is for after my trip. In Russia the weapons for hunting are taken care of. Once I return I will need to make a decision on what to purchase. Thank you for your input, I will actually do that, I have a cousin who has both and would gladly show me around.