I fixed this BC10 Bolt Action AR .308? Upgraded with ED-LHT 3-15x50

Published on June 14, 2026
Duration: 8:43

This guide details the process of smoothing the action on a Bear Creek Arsenal BC-10 bolt action AR chambered in .308 Winchester. The author addresses initial issues with a stiff and locking action by performing a deep cleaning and gently polishing the bolt lugs to simulate break-in wear. The process involves careful disassembly, cleaning, light polishing with a buffing wheel, lubrication, and reassembly, aiming to improve the overall smoothness of the bolt operation. The video also touches on optic mounting and initial range testing after the modifications.

Quick Summary

The Bear Creek Arsenal BC-10 bolt action AR .308 experienced initial issues with a stiff, locking action. To fix this, a deep cleaning and gentle polishing of the bolt lugs were performed to simulate break-in wear, significantly improving the action's smoothness. The rifle was then tested with a Discovery Optics 3-15x50 scope and Winchester Whitetail 150gr .308 ammo.

Chapters

  1. 00:00Introduction: BC-10 Problems
  2. 00:45Deep Cleaning and Action Smoothing
  3. 01:37Optic and Mount Installation
  4. 02:20Sponsor Break: Aura
  5. 03:00Range Test: Ammunition and Initial Shots
  6. 03:18Ejection Failure and Mag Catch Issue
  7. 04:25Rifle Rest Adjustments
  8. 04:50Second Ejection Failure
  9. 05:24Improved Shot Placement
  10. 05:50Extractor Functionality
  11. 06:20Further Shooting and Grouping
  12. 06:52Project Goals and Accuracy Assessment
  13. 07:34Comparison to Savage Axis
  14. 07:54Conclusion and Thanks

Frequently Asked Questions

What were the initial problems with the Bear Creek Arsenal BC-10 bolt action AR?

The Bear Creek Arsenal BC-10 bolt action AR .308 initially suffered from a stiff action that frequently locked up, failed to eject cartridges, and would not open smoothly. These issues were present straight out of the box.

How can the action of a Bear Creek Arsenal BC-10 be smoothed?

To smooth the action, a deep cleaning of the upper receiver and bolt carrier group is recommended. Gentle polishing of the bolt lugs with a buffing wheel and a small amount of polishing compound can simulate break-in wear and improve smoothness.

What optics were used for testing the Bear Creek Arsenal BC-10?

For testing, a Discovery Optics ED-LHT 3-15x50 first focal plane scope was used, mounted with a DG-SM heavy duty scope mount. An O-site Model X red dot was piggybacked onto the scope mount.

What ammunition was used for the accuracy testing of the BC-10?

The accuracy testing of the Bear Creek Arsenal BC-10 utilized standard Winchester Whitetail 150 grain .308 ammunition, chosen to represent common hunting loads rather than specialized match ammunition.

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