Mounting a Scope with AMTAC Shooting

Published on August 24, 2020
Duration: 19:19

Bill Rapier of AMTAC Shooting provides an expert-level guide on properly mounting a rifle scope for consistent long-range accuracy. The process emphasizes critical steps like achieving correct eye relief and cheek weld, ensuring the reticle is perfectly level using multiple references, and meticulously torquing screws with visual checks. The guide also covers initial zeroing, setting turret zeros, and the importance of gathering ballistic data with a chronograph to 'true' software predictions for extended distances. This methodical approach is crucial for repeatable performance in precision shooting.

Quick Summary

Proper scope mounting is crucial for precision shooting. Key steps include achieving correct eye relief and cheek weld, ensuring the reticle is perfectly level using bubble levels and a plumb line, and meticulously torquing screws. Marking screws helps monitor tightness, while measuring muzzle velocity and 'truing' ballistic software ensures accuracy at distance.

Chapters

  1. 00:00Introduction: Importance of Scope Mounting
  2. 01:14Initial Scope Mounting Setup
  3. 02:10Ergonomics and Eye Relief Adjustment
  4. 03:55Leveling the Optic: Reticle Alignment
  5. 05:54Torquing and Marking Scope Ring Screws
  6. 07:57Initial Zeroing Process at 100 Yards
  7. 10:03Setting the Turret Zero Mechanism
  8. 11:37Gathering Ballistic Data: Muzzle Velocity
  9. 13:34Truing Ballistics at Distance
  10. 16:36Rifle Component Breakdown

Frequently Asked Questions

What are the key steps for properly mounting a rifle scope?

Proper scope mounting involves securing the rifle, positioning the scope for correct eye relief and cheek weld, ensuring the reticle is perfectly level using bubble levels and a plumb line, applying Loctite, and torquing screws to spec. Marking screws helps monitor tightness over time.

How do you ensure a scope's reticle is level?

To level a scope's reticle, use bubble levels integrated into the scope rings or chassis. Cross-reference this with a plumb line (like a weighted cord) set up at a known distance, such as 100 yards, to guarantee perfect vertical alignment.

Why is measuring muzzle velocity important for long-range shooting?

Measuring muzzle velocity with a chronograph (e.g., MagnetoSpeed) provides crucial data for ballistic software. This allows you to 'true' the software's predictions based on actual ammunition performance, leading to more accurate holdovers and adjustments at extended ranges.

What is the purpose of marking scope ring screws after torquing?

Marking scope ring screws with a paint pen after they have been torqued to specification serves as a visual indicator. This allows the shooter to quickly check if any screws have loosened during firing, which could affect the scope's zero and accuracy.

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