ON THE OTHER HAND, leading is mainly caused by 4 things: 1.) boolit not fitting the barrel correctly ( ie boolit too small for groove diameter...unable to create a good seal with the bore) 2.) not pushing hard boolits hard enough 3.) Pushing soft boolits too hard 4.) Lube issue (not enough, poor mixture, etc).Conbinations can also be used: ie. boolit to small, not being pushed hard enough with a terrible home-made lube (who has ever done such a thing...
).