Not sure what you mean by affordable ammo but I own a 7mm Remington Mag and as of last night, a 7x57. Ammo here runs $13-$30 for the 7 mag and $13-$20 for the Mauser. Last summer our Wal-mart had Federal Premium 160 gr partitions for $17 per box (7 mag) and Core-lokt Ultras for $20. Not a huge diffence from your standard calibers.