Editing Caliber (section)

==Rifle caliber and cartridge conversions==
Converting a rifle to fire a different cartridge in the same bore diameter, often involves merely re-chambering the barrel to the new cartridge dimensions, if the rim diameter of the new cartridge matches that of the old cartridge. Converting a rifle to fire a different cartridge in a different caliber and bore as what it initially was, means that the barrel of the rifle will also need to be changed. Because many competitive precision rifle shooters often shoot thousands of rounds per year both for practice and competitions, and they more often reach the end of their barrel life, whereby the [[rifling]] is worn down to a point where a rifle loses some of its [[accuracy]], the choice to make a caliber or cartridge change is often done at the same time as when a new rifle [[Gun barrel|barrel]] is fitted to the rifle by a [[gunsmith]]. There are a few important factors to consider when converting a rifle to a different caliber or cartridge. The action of the rifle should be long enough to contain the new cartridge, the magazine should also be able to hold the new cartridge, the bolt face should be the correct diameter<ref>{{cite web |url=https://www.loaddevelopment.com/bolt-face-action-database/ |title=Bolt Face Database |publisher=LoadDevelopment.com |year=2020 |access-date=2020-09-22}}</ref> and the extractor the correct size to hold the head of the new cartridge. The most common of these caliber conversions on rifles, are usually done to change from a parent cartridge to a new cartridge based on it, like when converting a rifle to a [[6.5mm Creedmoor|6.5 mm Creedmoor]] from a [[.308 Winchester|308 Winchester]] on which it is based.