Bartlein: .375 Cal Blank, Stainless Steel, 31" - Straight Taper

.375 Cal bbl, .366x.375

5 Groove

1-12 twist

Stainless Steel

• Bore Diameter tolerance = +.0005
• Groove Diameter tolerance = +.0005
• Bore and Groove uniformity along entire length of barrel +.0001/-.0000
• Twist uniformity is best in the industry. Twist can be carried out to the 4th decimal point. Example: 11.3642 A Bartlein