How to Check a Crown on a Rifle
- 1). Insert a cleaning patch into the front end the barrel. Push the patch in just far enough so it clears the barrel's opening.
- 2). Turn on the bore light and shine the light on the patch. The light reflecting off the white patch will help you to notice any issues that might be present with the crowning.
- 3). Examine the rifle's crown visually. Look for rust spots, pitting and scratches, all of which need to be addressed. Remove the cleaning patch with the tweezers.
- 4). Rub the cotton swab over the end of the barrel and around the rim on the inside of the barrel, where the rifling meets the front of the barrel. If there is any damage, such as burrs or pitting, the swab will "snag" on the damaged areas.
