That’s the science. The religion-and-wizardry part arrives into play due to the fact there’s no definitive way to test the accuracy of a new barrel with and devoid of split-in. Regarding the effects of rounded rifling on accuracy, the rifling provides an angular velocity into a bullet so using abrasives https://dallasdjlnm.bloggactivo.com/35266158/detailed-notes-on-歌德证书