• Make sure to break in barrel properly

  • Use high quality match grade ammunition, try different ammunition

  • Feed ramps sharp, polish feed ramps

  • Ensure all optic mounts and rings are torqued to the correct specification

  • Ensure optic is set up properly

  • Barrel has too much carbon and copper fouling, clean carefully with copper solvent, follow solvent manufacturer’s instructions

  • Make sure gas block is adjusted so that the rifle is not over-gassed

  • Throat erosion, barrel has reached service life