Buy a back up barrel and swap it your self when you shoot the other one out, but that's going to be a while.
My 1st .223 went many thousands of rounds before going south.
All my current .223s have over 5k rounds through them and still shoot under 1" @ 100 yds.
I use mine for p-dogs/coyote, so Im not concerned about all in the same hole.
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