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Sighting in a firearm is an important test of the ability of the firearm user to hit anticipated targets with available ammunition. Pictures or silhouettes of intended targets are less suitable for sighting in than high contrast shapes compatible with the type of sights on the firearm. Contrasting circles are commonly used as sighting in ...
Mean point of impact (MPI) is the calculated center of the grouping, which is the average center of all the shots, and is not necessarily located at a hole in the target. [2] The process of mechanically readjusting the gunsight's point of aim to match the MPI is called sighting in or "zeroing" the gun.
Zeroing refers to a controversial methodology used by the United States for calculating antidumping duties against foreign products. The foreign domestic price (FDP) of the product is compared with its U.S. import price (USIP) adjusted for transportation and handling costs. Under zeroing, the United States sets at zero the negative differences ...
Currently the only paper targets used for handgun is the IPSC Target (formerly Classic Target) and the 2/3 scaled down IPSC Mini Target (formerly IPSC Mini Classic Target). The center of these paper targets is called the A-zone. Additionally, for rifle and shotgun "A3" and "A4" paper targets and the "Universal Target" is used. For steel targets ...
Rifleman's rule is a "rule of thumb" that allows a rifleman to accurately fire a rifle that has been calibrated for horizontal targets at uphill or downhill targets. The rule says that only the horizontal range should be considered when adjusting a sight or performing hold-over in order to account for bullet drop.
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Boresighting is a method of visually pre-aligning a firearm barrel's bore axis with the target, in order to more easily zero the gunsight (optical or iron sights). The process is usually performed on a rifle, and can be accomplished either with the naked eye, or with a specialized device called a boresighter. [1]
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