How to Zero a BDC Scope Turret

Published on March 26, 2012
Duration: 2:06

This guide details the expert process for zeroing a Gunwerks Bullet Drop Compensation (BDC) scope turret, as demonstrated by Mike Davidson, Production Manager at Gunwerks. It covers establishing a 100-yard zero, calculating necessary M.O.A. adjustments, and properly resetting the BDC turret cap for accurate long-range engagement. The video emphasizes precision and provides a clear method for verifying the zero at extended distances.

Quick Summary

Zeroing a Gunwerks BDC scope turret involves shooting a 100-yard group, calculating the M.O.A. difference between group and target center, and adjusting the scope. Afterward, loosen the turret's set screws and rotate the cap to '0' without changing internal settings. Finally, verify the zero by engaging a target at a known long-range distance like 950 yards.

Chapters

  1. 00:00Introduction to BDC Turret Zeroing
  2. 00:12Establishing a 100-Yard Zero
  3. 00:35Calculating M.O.A. Adjustments
  4. 01:12Resetting the Turret Cap
  5. 01:43Long-Range Verification

Frequently Asked Questions

What is the first step in zeroing a Gunwerks BDC scope turret?

The initial step involves shooting a three-shot group at 100 yards. This allows you to accurately determine the center of your group relative to the target's center, providing the baseline for necessary adjustments.

How do you reset the Gunwerks BDC turret cap after zeroing?

After zeroing the rifle, you must loosen the set screws on the BDC turret cap. This enables you to rotate the cap to the '0' mark without altering the internal scope's zero, ensuring your ballistic holdovers are correctly calibrated.

What does M.O.A. mean in scope adjustments?

M.O.A. stands for Minute of Angle. It's a common measurement for scope adjustments, where one M.O.A. at 100 yards typically corresponds to about one inch of point-of-impact shift. This is crucial for precise zeroing.

How is the zero verified after adjusting the BDC turret?

The zero is verified by dialing the BDC turret to a specific, known long-range yardage, such as 950 yards, and then successfully engaging a target at that distance. This confirms the turret's accuracy.

Related News

All News →

More Training & Techniques Videos You Might Like

More from Gunwerks

View all →