A counterbore is when the rifling and part of the inner diameter of the bore is drilled out from the muzzle back far enough to get rid of boogered up rifling.The need for counterboring is caused by poor cleaning methods, ie: not using a rod guide. counterbore is when the rifling and part of the inner diameter of the bore is drilled out from the muzzle back far enough to get rid of boogered up rifling. The need for counterboring is caused by poor cleaning methods, ie: not using a rod guide.
Eileen Fisher - Highland Park 640 Central Avenue, Highland Park IL 60035 Phone Number: (847) 433-5440
Park Hours & Fees Falls Park, located at 601 S. Main St, Greenville, is open from 7 a.m. - 9 p.m. daily. There is no admission fee. Telephone inquiries: 864-467-4355 Parking Located in the near West End of Main Street, visitors can choose from a variety of parking options: