How a Mosin-Nagant PU Sniper Mount Works

Published on January 18, 2018
Duration: 9:33

This video details the unique mechanics of the Mosin-Nagant PU sniper rifle's mount system. It explains how the PU scope's reticle moves for adjustments and how the mount itself uses a ball-and-socket joint for coarse elevation changes. Windage is adjusted non-traditionally via filing or shimming the mount's tongues, requiring careful gunsmithing to achieve a proper zero.

Quick Summary

The Mosin-Nagant PU sniper mount uses a ball-and-socket joint for coarse elevation adjustments via vertical screws. Windage is adjusted non-traditionally by filing or shimming the rear mount 'tongues'. The PU scope's reticle moves for adjustments, and its zero scales can be reset after zeroing the rifle.

Chapters

  1. 00:00Intro: Mosin-Nagant PU Sniper Rifle
  2. 00:50PU Scope Reticle Adjustments
  3. 02:16Mount Mechanics & Disassembly
  4. 05:00Elevation Adjustment on Mount
  5. 06:37Windage Adjustment: Filing/Shimming
  6. 08:50Finalizing the Zero

Frequently Asked Questions

How does the PU scope's reticle adjust for elevation and windage?

Unlike modern scopes, the PU scope's elevation and windage adjustments physically move the reticle itself within the scope's field of view. This is controlled by drums on the scope body, which can be reset after zeroing.

What is the primary mechanism for elevation adjustment on the Mosin-Nagant PU sniper mount?

The mount uses a ball-and-socket joint at the front. Coarse elevation is adjusted by loosening the main clamping screw and using the opposed vertical screws to pivot the rear of the mount up or down.

How is windage adjusted on a Mosin-Nagant PU sniper rifle mount?

The mount lacks dedicated windage screws. Adjustment is achieved by filing down or adding shims to the 'tongues' at the rear of the mount, which interface with the rifle's receiver.

Can the PU scope's zero marks be reset after adjusting the mount?

Yes, once the rifle is zeroed using the mount's adjustments, the shooter can loosen the clamping screws on the scope's elevation and windage drums to reset the indicator scales to zero without moving the reticle.

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