On Repro Firearms, Cock-On-Close Vs. Open. (TFBTV Weekly Ep.1)

Published on November 18, 2015
Duration: 7:02

This video explains the functional difference between cock-on-open and cock-on-close bolt-action rifle designs. Cock-on-open systems, like the Mauser 98, cock the rifle when the bolt is lifted, offering less resistance during cycling. Cock-on-close systems, exemplified by the Lee Enfield, cock the rifle when the bolt is closed, which can provide a simpler mechanism and potentially faster cycling for experienced shooters due to bolt placement and throw.

Quick Summary

Bolt action rifles are categorized by their cocking mechanism: cock-on-open and cock-on-close. Cock-on-open systems, like the Mauser 98, cock when the bolt is lifted, offering smoother cycling. Cock-on-close systems, like the Lee Enfield, cock when the bolt is closed, which can be simpler and potentially faster for experienced shooters due to bolt placement.

Chapters

  1. 00:00Introduction to TFBTV Weekly
  2. 00:46Firearm Reproductions: Why They're Rare
  3. 02:40Cock-On-Open vs. Cock-On-Close Bolt Actions
  4. 03:01Understanding Cock-On-Open (Yugoslavian Mauser)
  5. 04:07Understanding Cock-On-Close (Lee Enfield)
  6. 05:07Advantages and Speed of Cock-On-Close
  7. 06:06Conclusion and Viewer Questions

Frequently Asked Questions

What is the primary difference between cock-on-open and cock-on-close bolt action rifles?

The main difference lies in when the rifle cocks. Cock-on-open rifles cock as you lift the bolt handle, making cycling smoother. Cock-on-close rifles cock as you push the bolt handle forward to close it, which can require more effort during that phase.

Which bolt action designs are examples of cock-on-open?

The Mauser 98 action is a classic example of a cock-on-open design. Many modern hunting rifles are based on this principle, offering easier bolt manipulation due to the firing pin being cocked on the upstroke.

What are some prominent examples of cock-on-close bolt action rifles?

The Lee Enfield rifle series, such as the 1917 short-magazine model, is a well-known example of a cock-on-close design. The Swedish 96 Mauser is another notable rifle that utilizes this mechanism.

Are cock-on-close rifles inherently faster to operate than cock-on-open?

While theoretically simpler to produce and potentially faster, the perceived speed of cock-on-close rifles like the Lee Enfield is often attributed to factors like short bolt throw and ergonomic bolt handle placement, rather than solely the cocking mechanism itself.

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