The 32 special came out after the 3030, it was a smokeless powder factory round but was intended to be suitable for reloading with bp as smokeless was in its infancy at the time. The rifles had a 1:12 twist which was better than the 1:10 of the 3030 at resisting bp fouling.
Power was identical to the 3030 which proved to be far more popular and the 32 special kind of died off.
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