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How are gun barrels made?
How are gun barrels made and how can they withstand the extreme pressures caused by a powder ignition? They seem to have fairly thin walls, and are composed of stainless steel (not sure which alloy), but they can hold in 30,000psi! How is this possible? I know some small caliber barrels are made from carbon fiber, which has a massive tensile strength, but how do the larger caliber barrels hold in so much pressure?
They routinely hold up to about 60,000 PSI.
They are made of high strength steel, bored to rough internal dimension.
The final inside finish may be machined by broaching, but is now more
commonly forged about a mandrel.
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