Got a new tumbler. Came with cob medium. I've never used anything but walnut.

First test batch I notice about 30% of the cases have a tiny piece of cob in the flash hole. Never had that happen before.

They are easy to remove. A light poke with a toothpick does it.

I'm thinking about just leaving them there and prime away. Surely the primer will blast right through.

Go ahead, tell me my pistol with blow up taking my arm and head with it.