Papier-Mâché To Polymer: Getting The K31 Back Into The Rapid-Fire Stages

by
posted on August 24, 2019
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
k31teaser.jpg

Paradoxically, the most accurate, fastest-cycling and generally highest quality as-issued Vintage Military Rifle competition rifle, the Swiss K31, is not more prevalent at VMR matches—perhaps at least in part because the chargers have been an issue.

The Swiss-manufactured K31 six-round chargers (“stripper clips”) of a varnished papier-mâchéwith tinned iron edges. They were not intended to be reused, and after bending the tinned iron cartridge retaining clips a few times in reuse, they break off, rendering the charger useless. We need these chargers for reloading the K31 in VMR competition’s rapid-fire stages.

Once prevalent and inexpensive when the K31s and Swiss GP11 ammunition first hit American markets some years ago, original chargers are now so scarce that online auctioneers (or buyers) have escalated prices for these throwaways into the “Absurd” category at around $25 each. Solution: Northridge, Inc. has come to the rescue with reusable, durable polymer chargers. Cost is $25 a pair—and two is just what we need for a VMR match.

The origin of the K31’s charger is a pair of U.S. Army Lieutenant Colonels who, though creative, didn’t have much luck on the business side. According to The Book of Rifles (Smith & Smith, 1948) and an April 12, 1906 article in Shooting and Fishing magazine (precursor to American Rifleman), the Swiss papier-mâché charger is a knockoff of an earlier one invented by U.S. Army Lt. Col. Andrew H. Russel and Lt. Col. William R. Livermore in the late 1800s. It appears the Swiss did not compensate Russell and Livermore for their idea. The light colonels lost again when the U.S. government adopted the Krag-Jorgenson rifle after their Russell-Livermore Magazine Rifle failed to outperform the Krag in Army trials. They subsequently sued the government for $100,000 in 1901, claiming the side-loading Krag used several patented features of their rifle. They lost yet again when the court decided, on a technicality, that the colonels had sued based on an implied contract, rather than on a patent infringement, and so found no case against the government.


See more: Vintage Rifle Cartridges You May Not Know

Latest

Integrix Optichpr 1
Integrix Optichpr 1

Review: Integrix iXF 4.5x28 mm Service Rifle Scope

The Integrix iXF 4.5x28 Service Rifle scope from Leapers delivers competition-ready features and repeatable precision without the four-figure price tag.

The Last 10 Years of Shooting Sports USA

Standout covers and milestones from the past decade celebrating Shooting Sports USA’s history, evolution and mission.

Legends: Philip Schreier 1962–2025

Philip Schreier, NRA Museums Director and firearms historian, passes away at 63, leaving a lasting legacy through his dedication to preserving American firearms history.

Review: Tikka T3x Ace Target Rifle

Hands-on review of Tikka’s T3x Ace Target shows solid accuracy and real-world PRS readiness straight from the box.

Year In Review: 10 Of Our Best Articles From 2025

A year-end look at SSUSA’s most-read 2025 stories covering competition results, match-ready firearms, SHOT Show highlights and expert shooting guidance.

Review: Fabarm Infinite RS Sporting

A radically modern double gun built to challenge over-under dominance on the sporting-clays course.



Get the best of Shooting Sports USA delivered to your inbox.