The 7mm Mauser is one of the all time greats,But like everyone has said to get it full potential you need to handload. Or buy ammo made in Europe.
If the .270 is your 2nd choice you can get a Savage with scope, detachable magazine, synthetic stock for $339 at Walmart, If you don't like Walmart most gunshops can sell them for about $360.
They are very good rifles for the money.
The Savage with the detachable mag is cheaper than the other package guns but only comes in .270 and 30-06.

Good luck