White Ballistics Laboratory and to General Julian Hatcher to elicit their opinion of the design. The action type was shown to Burt Munhall of H.P. In spring 1955 Weatherby demonstrated his new action at the annual NRA meetings in Washington, D.C. Such a design would be conducive to a smooth fluid movement of the bolt through its feeding and extraction cycles. It was determined early on that these lugs would not protrude outside the bolt but would be of the same diameter as the bolt body itself. Weatherby designed the action type with nine locking lugs arranged in three rows. The bolt cams forward slightly as the bolt is closed following the pitch angle of the screw thread. The nine lugs are actually sections of a screw thread. The Weatherby Mark V action uses an interrupted screw breech as used on many artillery pieces. To Weatherby, the safety and strength of the design were paramount. Further as an extra safety measure he required an enclosed or shrouded bolt sleeve that would prevent the hot gases from making their way through the bolt mechanism to the shooter's face. If a rupture should occur, the bolt would have holes through which hot gases could be vented safely towards the side and away from the shooter's face. Weatherby's requirements included a bolt face which was countersunk into the bolt which would enclose the cartridge's case head while the bolt head was enclosed in a counterbored barrel breach, which in turn would prevent the case head from rupturing. This in turn would lead to hot gases making their way through the bolt and into the shooter's face and eyes and causing injuries to his customers. He had been aware that many handloaders were overloading their cartridges seeking higher performance, which was resulting in blown primers and ruptured case heads. would fare better with the Weatherby line of cartridges. While these action types could easily withstand a high pressure of about 70,000 C.U.P, he felt that one which would have the capability of handling 200,000 C.U.P.
Roy Weatherby had found the Mauser-type wanting due to the case head not being completely enclosed and supported within the breech. With five European companies supplying actions, the frequent trips made to Europe left him little time to run the day-to-day business operations in South Gate, California. Roy Weatherby had been disappointed by the length of time that was taken discussing and negotiating before coming to an agreement with his European manufacturing partners.
A little later the FN Sako Mauser actions were added to action types used by Weatherby to build his rifles. 378 Weatherby Magnum a new action type was warranted so the Brevex Magnum Mauser action was added. In 1955 Schultz & Larson actions were added to the mix while adding the Mathieu left handed action to his rifle action line up. Beginning in 1949 Weatherby began building his rifles around the FN Belgian Mauser action. This is due in part to Roy Weatherby who presented the rifles to royalty, politicians, gun writers and actors including Prince Abdorreza Pahlavi of Iran, Generals James Doolittle (USAF) and Chuck Yeager (USAF), Jack O'Connor, Warren Page, Elgin Gates and Lorne Greene and was able to use this fact as a marketing tool.Įver since Roy Weatherby began manufacturing rifles he had to rely on a third party to provide the actions for his rifles. The Weatherby Mark V rifles are considered prestigious or luxury firearms by many. It is the flagship rifle of the Weatherby line of firearms. The rifle was introduced in 1957 by Weatherby and was designed to safely contain the high pressures associated with the Weatherby line of high performance cartridges. The Weatherby Mark V is a centerfire, bolt-action rifle manufactured by Weatherby of Sheridan, Wyoming. Models produced include Accumark, Accumark Pistol *, Alaskan *, Center Fire Pistol *, Classicmark *, Compact Firing Platform (CFP) * Crown Custom *, Dangerous Game Rifle (DGR) *, Dangerous Game Rifle Custom, Deluxe, Euromark *, Euromark Custom, Europa *, Eurosport *, Fibermark, Lazermark, Outfitter Custom, Royal Ultramark Custom, Safari Custom, Safari Grade *, Silhouette Pistol *, Special Varmint Rifle *, Sporter, Stainless *, Stainless Fluted *, Stainless Laminate Sporter *, Super Big Gamemaster *, Super Predator Master *, Super Varmintmaster *, Synthetic, Threat Response Rifle (TRR), Threat Response Rifle Custom, Threat Response Rifle Sub MOA, Ultra Lightweight, Ultramark, Varmintmaster * and Weathermark *Ģ- to 5-round internal box magazine (depending on caliber) ĭrilled and tapped for scope mounts. Weatherby Magnum, Non-Magnum, and Varmintmaster * Mark V action variants.
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