Zeroing a Blaser Sauer Thermal Mount: Step by Step
By Precision Optique | Published: 2026-10-27
Category: How-to Guides
Learn how to zero your Blaser Sauer thermal mount for accurate shooting. This guide covers preparation, adjustments, and common mistakes.
Quick answer
Zero your Blaser Sauer thermal mount by first mounting the thermal scope securely, then bore-sighting at a known distance, and finally making windage and elevation adjustments in small increments until the point of aim matches the point of impact.
Why zeroing a thermal mount differs from a standard scope
Thermal scopes often have a different eye relief and focal plane compared to traditional riflescopes, which can affect your natural point of aim. The INNOMOUNT ZERO system is designed to maintain zero when removed and reattached, but the initial zeroing process still requires careful attention to the thermal sensor's alignment.
Because thermal sensors can be sensitive to ambient temperature changes, it's best to zero after the scope has been powered on for at least 10 minutes to stabilize the image. This avoids drift during the adjustment process.
Common mistakes when zeroing a Blaser Sauer thermal mount
A frequent error is making large adjustment clicks at once, which can overshoot the zero and waste time. Always start with small increments—typically 1/4 MOA or 0.1 mil per click—and confirm each adjustment with a three-shot group.
Another mistake is failing to secure the mount's locking mechanism properly. The INNOMOUNT ZERO's quick-release lever must be fully engaged; a partially locked mount can shift under recoil and cause inconsistent zero.
Step-by-step zeroing process
- 1. Prepare your rifle and thermal scope: Ensure the rifle is unloaded and secure in a stable rest or vise. Attach the INNOMOUNT ZERO to the Blaser or Sauer receiver, then mount the thermal scope per the manufacturer's instructions. Tighten the locking lever firmly but not excessively. Check that the mount's locking lever is fully closed—any play here will ruin zero consistency.
- 2. Bore-sight at 25 yards: Remove the bolt or use a bore-sighting tool to align the bore with a target at 25 yards. Adjust the thermal scope's windage and elevation until the reticle is centered on the same point. This gets you on paper before live fire. Bore-sighting at a shorter distance reduces the chance of missing the target entirely on the first shot.
- 3. Fire a three-shot group and adjust: Fire three rounds at a target 100 yards away (or your intended zero distance). Observe the group center relative to your point of aim. Make windage and elevation adjustments in small increments—typically 4 clicks per inch of correction at 100 yards for 1/4 MOA scopes. After each adjustment, fire another three-shot group to confirm. Avoid single-shot corrections, as they can be misleading due to shooter error.
- 4. Confirm zero with a cold-bore shot: After achieving a consistent zero, let the rifle cool to ambient temperature. Fire a single cold-bore shot at your zero target. The point of impact should be within 1 MOA of your point of aim. If not, repeat the adjustment process. A cold-bore shot reveals any thermal or mechanical shift that warm-barrel groups might mask.
- 5. Test the quick-release repeatability: Remove the INNOMOUNT ZERO from the rifle, then reattach it using the same locking procedure. Fire another three-shot group and compare it to your zero group. The group center should shift no more than 0.5 MOA if the mount is functioning correctly. If the point of impact shifts significantly, clean the mounting surfaces and re-torque the locking lever to the same position each time.
Product facts
- Montage amovible Blaser - Sauer - Thermique: The INNOMOUNT ZERO for Blaser - Sauer - Thermique is designed for integration with a wide range of thermal scopes, including Pulsar Thermion, Infiray, Hikmicro, and others. This broad compatibility means you can zero the mount once and swap thermal scopes without re-zeroing, as long as the mount remains attached to the same rifle.
Montage amovible Blaser - Sauer - Thermique
