In the end I think it is the ammo thats the real expense.The rifle even an expensive one is cheap compared to the ammo if you shoot a lot.
I would love to have a backyard where I can shoot then i would use cheap stuff.
The extra wear on barrel would be trivial compared to the money saved on ammo.
And the extra mal functions would give me training value also..
For SHTF I would load up on the good stuff only.
As it is because the local ranges allow no bimetal bullets I am stuck running the spendy ammo during training as well