My shotshell trimmer. It indexes on the rim so all shells are exactly the same, no adjustments needed for base wad height.

3/4" copper pipe works for 12ga, you might have to size the brass part first if the original gun had a large chamber. I cut with a sharp box cutter.



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For 10ga two 3/4" connect fittings soldered together and cut to length

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Last edited by oskar; 07/25/24 12:47 PM.
After the first shot the rest are just noise.