That’s the science. The religion-and-wizardry element comes into play simply because there’s no definitive way to test the accuracy of a different barrel with and without the need of split-in. Cold-hammer-forged barrels aren't Slash, but hammered about a mandrel to build the rifling. They should be smooth. Ditto broached or https://rowanvzbbc.life3dblog.com/34863475/the-smart-trick-of-歌德证书-that-nobody-is-discussing