I read a pretty long article about what the guys were doing in the Houston warehouse back in the day, and they opined that the absolute best barrel length for accuracy is 21 3/4". My Savage 308 has a little weird spot in the grooves right at the end of the barrel so I was thinking about cutting it back & re-crowning it, and of course it got me thinking about this number. So, has anyone tsted this theory for themselves?