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A chamber reamer is a specific type of fluted reamer used by gunsmiths and firearms manufacturers to cut the chamber of a handgun, rifle, or shotgun.The chamber reamer is inserted into the bore of a barrel and held stationary while the barrel is turned around it (typically by means of a lathe).
Alteration of the original 6.5×53mmR caliber chamber by re-chambering the rifle barrel with a 6.5x57R [18] (see:6.5×57mm Mauser) chamber reamer has also been done, but the overall length of the original 6.5×53mmR Dutch or Romanian cartridge has to be maintained by seating the projectile more deeply into the cartridge case to fit the original ...
The .458×2-inch American was designed as a medium-power big-bore cartridge by Frank Barnes for North American big game. Frank Barnes found that the .458 Winchester Magnum and the .460 Weatherby Magnum too powerful for North American big game and believed that a cartridge of lesser power would be ample for the task.
A reamer is a type of rotary cutting tool used in metalworking. Precision reamers are designed to enlarge the size of a previously formed hole by a small amount but with a high degree of accuracy to leave smooth sides. There are also non-precision reamers which are used for more basic enlargement of holes or for removing burrs.
Since the 6.5-08 was a wildcat cartridge, variations existed between cartridge chambers depending on the reamer used to cut the chamber. Furthermore, depending on whether one chose to form the case from .243 Winchester or .308 Winchester influenced the neck thickness and therefore the dimensions of the cartridge.
It was originally designed to chamber the military 7.62x51 NATO cartridge (also .308), which has a COAL of 2.800" (71.12mm) 45 Raptor : uses the standard 7.62 NATO case, cut to a length of 1.800" from 2.015", resulting in a straight-wall cartridge, neck is sized to 0.452". The resulting COAL of 2.300" is only 1.02 mm longer than the maximum ...
The new cartridge used the same bullet and therefore only the chamber of the rifle had to be modified (reamed out by 2 mm plus 1 mm of neck extension) to accommodate the slightly longer case. This operation was easily performed on Gewehr 98 and Karabiner 98k rifles. It also meant that owners of rifles so re-chambered could not then be used as ...
The .358 Norma Magnum is a rifle cartridge introduced in 1959 by Norma.The cartridge is closely related to the .308 Norma Magnum and both cartridges share the same case head dimensions as the .300 H&H Magnum, but have far less body taper, resulting in the same internal capacity in a shorter case. [1]
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