Thread: Gess what I`m doing.

For a real clever #8 wire bit here is the rifling cutter head starting to do it`s job, fine chips starting to come out from the muzzle end. The barrel is tapered , .445" where the drill starts at the breech end and .444" at the muzzle end . If you look hard you can just see the T/C cutter in the slot of the rifling head, it is lowered to go back through to the breech end and is up when pulled through again. The twist is 1-20", six groves out to .457"
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