Sinclair - Comparator Nut MacRHRed Eliminate the confusion and be

Eliminate the confusion and be 100% Proof-Positive that your rifle barrels are free of copper fouling

The right tool and the right quality for the job

Designed for use on a wide variety of case lengths

Industrial maintenance products

Mix Ratios For Ballistol Oil:

Sinclair - Comparator Nut MacRHRed Eliminate the confusion and beSPECS Hex Model #1 has holes bored and throated for 22 Caliber (0. 224), 6mm (0. 243), 25 Caliber (0. 257), 6. 5mm (0. 264), 7mm (0. 284), and 30 Caliber (0. 308) Hex Model #2 has holes bored and throated for 17 Caliber (0. 172), 20 Caliber (0. 204), 22 Caliber (0. 224), 270 Caliber (0. 270), 30 Caliber (0. 308) and 338 Caliber (0. 338) Sinclair has been making these hex style bullet comparators for over 20 years. The holes in the Sinclair Bullet