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Fitting the 1911 Barrel, Part 4: Headspace

Fitting the 1911 Barrel, Part 4: Headspace

When factory 1911 barrels are produced, the chamber is cut measuring from the rear edge of the hood forward. As you remove material from the hood to fit the barrel to your slide, you are shortening headspace. If you drop a round into a barrel with short headspace, the rim will be above flush with the rear surface of the hood. This condition may prevent the barrel from locking. I have seen "drop in" barrels from major manufacturers with short headspace.

When the barrel is locked in firing position, the chamber end is higher than the muzzle and the cartridge base is actually making contact with the breech face at a slight angle.

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