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

Mix Ratios For Ballistol Oil:

even in low light

Custom built levers to your spec's are no problem

Made of High Quality Heat Treated Steel

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