I've got a handful of different FX Impact liners... including an STX liner, a slug liner, and an STX Superior liner. What's the easiest way to differentiate between all of these various liners? Thanks!
Besides the chart below? A micrometer or calipers to measure outer diameter. A cleaning rod to measure exact twist. Otherwise people are hoping FX starts laser engraving the liners. Not a bad idea when so many are available.