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First, it was Winchester's .22 Magnum Rimfire, or .22 WMR in 1959, followed in 1970 by Remington's short-lived 5mm Rimfire, based on Winchester's magnum case. In 2002, Hornady introduced a new .17 caliber cartridge based on the .22 WMR, the .17 HMR .
Winchester was a leading designer of rifle ammunition throughout its existence and has been responsible for some of the most successful cartridges ever introduced, including the .44-40 WCF (Winchester Center Fire), the .30 WCF (.30-30), the .50 BMG, the .270 Winchester, the .308 Winchester, the .243 Winchester, the .22 WMR (.22 Magnum), the ...
This primer was created specifically to provide reliable ignition for compressed powder charges in large capacity cases. [52] All reloading manuals provide loading data using only this particular primer to develop reloading data for the .460 Weatherby Magnum. In a pinch the Winchester WLRM primer or primers with similar brisance may be substituted.
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Centerfire primers are a separately manufactured component, seated into a central recess at the case base known as the primer pocket, and have two types: Berdan and Boxer. Berdan primers, patent by American inventor Hiram Berdan in 1866, are a simple capsule, and the corresponding case has two small flash holes with a bulged bar in between ...
The .264 Winchester Magnum is a belted, bottlenecked rifle cartridge. Except for the .244 H&H Magnum and .257 Weatherby Magnum , it is the smallest caliber factory cartridge derived from the 2.85 in (72 mm) Holland & Holland belted magnum case.
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The .458 Winchester Magnum is a belted, straight-taper cased, Big Five game rifle cartridge. ... Primer type: Large rifle magnum: Maximum pressure: 60,000 psi (410 MPa)