Why did you buy the rifle?
If you wanted target grade accuracy you should have expected premium ammunition would be expensive.
If you don't care as much about accuracy, a surplus rifle in a caliber that hasn't dried up MAY be cheaper, till that stuff does dry up.
In the long run, shooting any centerfire rifle with factory loads is going to be expensive, to some degree, sooner or later.
You can go with a cheap gun & hope surplus ammunition holds up, along with typically fair to mediocre accuracy, or you can stay with what you have and learn to reload for it, as others have suggested.