Description: Sinclair Bronze Bore Brush, Rifle 270/6.8 mm (.277), 284/7 mm (.284) Caliber Md: B7MM Sinclair bronze bore brushes are manufactured significantly larger than bore diameter to fit your barrel properly and have a closed loop on the end. Many other brushes are undersized and don't do an adequate job of scrubbing the barrel.
Specifications: - Caliber: 270/6.8 mm (.277), 284/7 mm (.284)
Manufacturer: Sinclair International Manufacturer Number: B7MM
No specifications information on file.
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