Warne Mountain Tech 1-Piece Picatinny Base Matte for Winchester 70 WSM - 20 MOA

The Warne Mountain Tech 1-piece Picatinny base for Winchester 70 WSM rifles with 20 MOA elevation is built for shooters who demand a rock-solid optic platform without compromise. This single-piece aluminum mount eliminates the flexibility and potential zero-shift issues of two-piece bases, giving you the rigidity needed for consistent, repeatable accuracy whether you're dialing for long-range hunting or working precision shots at the range. The 20 MOA built-in angle is especially useful for WSM cartridges—it extends your elevation adjustment range, letting you dial for distance without burning through your scope's internal turret travel.

Warne machines these bases from 7075-T6 aluminum, the same military-grade material used in aerospace applications. It's tough enough to take punishment in the field yet light enough not to burden your rifle. The matte finish cuts glare and looks purposeful on any WSM build. Hardware is black zinc coated for corrosion resistance, and the self-centering tapered Torx screws make installation intuitive—no fumbling, no guesswork. The base is NATO-STANAG Picatinny-compatible, so it'll accept any Picatinny or Weaver-style ring system you choose.

If you've built or upgraded a Winchester 70 WSM for hunting or long-range work, this is the kind of foundation that lets you focus on the shot instead of worrying whether your scope will hold zero. It's the kind of detail that separates a rifle you trust from one you hope works.

Key Features

• One-piece machined design eliminates base deflection and zero shift
• 20 MOA integral angle optimizes elevation adjustment range for WSM calibers
• 7075-T6 aluminum construction—lightweight, rigid, and durable
• Mil-Spec hardcoat anodized finish resists abrasion and corrosion
• Black zinc coated hardware for extended field life
• Self-centering tapered Torx screws for hassle-free installation
• NATO-STANAG Picatinny compatible; accepts Picatinny and Weaver rings

Specifications

Frequently Asked Questions

What does the 20 MOA angle do on this Winchester 70 WSM base?

The built-in 20 MOA elevation gives you extra upward adjustment room in your scope's turret. On WSM cartridges shooting at extended ranges, this lets you dial for distance without running out of elevation travel inside the scope. It's a smart design choice for long-range hunting and competition shooting where you need that extra dial range.

Will this base work with my Picatinny rings and scope?

Yes. The base is machined to NATO-STANAG Picatinny specifications and will accept any Picatinny or Weaver-style ring system. As long as your rings fit standard Picatinny rails, they'll work with this base.

Why choose a one-piece base over a two-piece design?

A single-piece base is more rigid and eliminates the potential for flex or deflection between two separate components. This translates to better zero stability and more predictable accuracy, especially important if you're dialing for precision shooting or long-range hunting.

Is this base easy to install?

Yes. It uses self-centering tapered Torx screws that are designed for straightforward installation. No special tools beyond a T-15 Torx driver are needed, and the tapered design helps ensure proper seating without fuss.