Bartlein: 6.5mm, Blank Stainless Steel, 29" - #23 Marksman Contour

6.5mm bbl, .256x.264

5 Groove

"T" style 8.7 to 7.622  left hand twist

Stainless Steel

Breach diameter:  .870" @ 28" finish end 29"

• 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