Written by Sierra Bullets Ballistic Technician Paul Box
From time to time I get calls about shooters “losing” a bullet. This has become more common from the .204 Ruger than any other caliber that I can remember.
Losing a bullet is not referring to the one dropped on the floor and rolled under the bench that you can’t find, but rather a bullet that didn’t make it to the target. More times than not, it is caused by a throat that has become “heat checked” from several firings over time. These little cracks can have sharp edges that damage the jacket and results in a bullet coming apart in flight.
With some calibers, it’s a good habit to get into scrubbing the throat area with a bore mop and JB bore cleaner. This will smooth those rough edges reducing the damage to the jacket. A good scrubbing in this area every 400 rds. will go a long way to stopping this headache.