What is the drop in diameter gauge/checker called? I've seen them before where they are the exact diameter of the bbl of whatever caliber you're handloading, and if the finished round drops all the way into the hole, it's not still belled out too much? I would use it instead of taking my bbl out and doing a drop in test.
It's killing me and I want to order a few calibers.
Anyone have a clue? Or, did I pick the wrong week to quit sniffing glue???