Bartlein: .270 Blank Stainless Steel, 27" - #7 MTU Contour

.270 cal BBL, .270x.277

5 Groove

1-8 twist

#7 MTU

Stainless Steel

Breach diameter: 1.250"

• 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