Comments by "Steve Valley" (@stevevalley7835) on "The Drydock - Episode 293" video.

  1. It was the slow burn rate that USN BuOrd did not fully appreciate when they switched to smokeless. The USN switched from a 13"/35 to a 12"/40 to take advantage of the slower burn rate, but the new 12"/40s, and the 8"/40s started blowing their muzzles and chases off. BuOrd found chamber pressures were as predicted, but pressure in the chase was far higher than expected. A rebuild program was instituted where the guns were given a strong liner and hooped to the muzzle to reinforce them.
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