I've gone through ClassicArms.Inc and AuctionArms.COM to purchase Hand Guns and these rifles.
At Classic Arms web site they have some interesting weapons and ammo.
Check out their PSL ROMAINIAN SNIPER RIFLE SHOOTERS PACKAGE for $800.00, I've been a good boy this year and may get one of these also.
At Aim Surplus you will find the best prices for 7.62 x 39, 7.62 x 54, and 7.62 x 25 ammo.
Last Sunday at a Gun Show here on San Antonio, I purchased 600 rds of Chinese Norinco Ammo for only $80.00, and nowadays that is a bargain.