This could explain that satisfying "KA-POW!" from the smallest bore, as opposed to the "KA-BOOM" from the 50s..... And the basso-profundo "BOOM" from the 75.....
Perhaps next, I'll try a 3/16" bore....I have a 1/16" cobalt bit that's just dying for a job, too.... But that might be pushing the limits..... Not sure FF powder will fit into a 1/16" bore....

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