Homemade Rifling Machine | New Idea Solve An Old Problem

AB-SHOP

Hi world, I decided to make a little dream come true, a challenge that started as a bet a few years ago, when a friend told me that with the standard parallel lathe you can't make a step as large as the typical 1:250 ( mm) of the internal rifling of a firearm (1 turn in 250 mm) or in any case it go