I’ll have to try a pipe cutter. I use a wood dowel with a razor blade tapped into it to trim. They still don’t cone out perfectly even. I found BP brass hulls for $7.99 just haven’t pulled the trigger on them yet.I still have a couple weeks before my season.
Oops, I was unclear, I used to the pipe cutter to get the copper tubing to the length I wanted, stick the 10 gauge hull in the tubing and used a folding razor knife to the trim the hulls to the length I want, not perfect, but comes pretty close.
Or you can buy the hull trimmer from Ballistic Products which works quite well and is much faster: https://www.ballisticproducts.com/Trim-Doctor-II-Shotshell-Case-Tool/productinfo/TRIM2/