I purchased an after-market barrel for my rifle and it says on the barrel “ejecting an unfired round may leave a bullet in the barrel,” or words to that effect. Why is that warning on the barrel?
Many of the after-market barrels use a “match chamber” to enhance accuracy. When the cartridge is fed into a match chamber, it will “pre-engrave” the bullet into the rifling. When you attempt to remove the unfired cartridge, the bullet may stay wedged in the rifling and only the unfired case will be withdrawn from the gun, spilling powder in the action. This is a greater issue with semi-autos than bolt action rifles. The semi-auto’s bolt spring may not have enough power to completely seat the cartridge in match chambers.
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