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Anonymous /k/63915012#63930874
7/3/2025, 3:26:07 AM
>>63930795
These high velocity full powered cartridges generally have shorter barrel lives. One of the multiple reasons which 6mm Lee Navy was moved away from a long time ago was that it had a very short barrel life, the Navy liked the performance of it, but it still had a pretty short lifespan after downloading it some.

Now, 6mm Lee Navy was an infantry rifle and machinegun cartridge, so by necessity it was going to see magnitudes larger volumes of fire, and with early 1900s logistics and metallurgy that actually becomes a problem.
Meanwhile, a cartridge like 6.5mm Creedmoor is used for long range target shooting and hunting, thus necessitating a FAR lower volume of fire, so the shorter barrel life is much less of an issue, and a generally acceptable tradeoff. You know what you're getting into and it's still gonna take a while.

You'd see similar things with .243 Winchester and .270 Remington, which are the same kind of high powered and high velocity small bore cartridges. I imagine that extreme examples like .277 Fury, which is supposed to be an infantry rifle and machinegun cartridge, only with balls to the walls chamber pressures to ensure goal velocities from short barrels, is going to see pretty ghastly erosion and have a very short lifespan.