Bartlein: .20 Cal Blank, Stainless Steel, 27" #13 REM Varmint

.20 Cal bbl, .199x.204

5 Groove

1-9 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