If you accidentally create a duplicate topic you can delete that yourself and please do. However for various reasons we can't allow users deleting duplicate comments on their own (a.k.a a response to a forum topic).
We try to remove these daily (which are pretty few actually) but please notify if we miss one.
What does "gauge" mean anyway? As used here gauge means the number of round lead balls the same diameter as the inside of the barrel (aka the bore) that it would take to weigh one pound. It takes 12 lead balls the same diameter as a 12 gauge barrel to weigh a pound. The smaller 20 gauge would require 20 balls of that barrel diameter. The larger bore 12 gauge would require 12 lead balls of the bore diameter to weigh one pound.
In general the number of pellets in a shotgun shell...