Before you replace the barrel or sell the rifle do this faster and less expensive adjustment.

Clean the barrel out vigorously with a compound and shoot it.

Recut its crown yourself. Use a grinding wheel with an angle to it.

[img]http://media3.picsearch.com/is?u8VEaWGaFCIVVcM-FtTyQBTnMP2DNbMw_jKb75M1QlU&height=228[/img]