CRB - SS, 7mm, C# 1.25" Straight, 8.5 twist, 33" blank (32" finish), 4 Groove

Custom Rifle Barrels 7mm C# 1.25" Straight Barrel Blank

The Custom Rifle Barrels 7mm C# 1.25" Straight is a match-grade stainless steel barrel blank. It runs a 1:8.5" twist with 4-groove rifling and ships as a 33" blank, ready to chamber, contour, and crown to your spec.

Specifications

• Caliber / bore: 7mm
• Contour: C# 1.25" Straight
• Twist rate: 1:8.5"
• Blank length: 33"
• Rifling: 4-groove conventional rifling
• Material: Stainless steel, polished

Is this the right barrel for your build?

This is a mid-range twist that stabilizes a broad spread of bullet weights — a versatile choice for target and field builds. The straight contour holds full diameter for maximum stiffness and heat capacity, resisting whip and point-of-impact shift through long strings. Not sure it's right for your action, chamber, or bullet? Tell us what you're building and we'll help you get it right.

What a barrel blank is

A barrel blank is finished to your spec: your gunsmith cuts it to length, chambers it, threads the tenon to your action, and crowns the muzzle. Cutting a blank to length doesn't change its twist rate, so order for the finished length and profile your build calls for.

Keep it shooting

We recommend pairing your barrel with the ThorroClean Bore Cleaning System — fast, odorless bore cleaning that helps protect accuracy and keep the bore in top condition.