Originally Posted By: Shotgunjones
So, riddle me this...

How many times have we read that Brit #6 is 270 to the ounce?

All the noted scribes seem to think that's so, but show me anything 270/oz. here http://www.hallowellco.com/shot_size_chart.htm

Perhaps the nice neat little divisions in diameter aren't actually the case? The chart represents calculated values or actual measurement of commercial pellets? Or what?

Brit 6 (Am 7, or 'thereabouts') works peachy on overhead driven pheasants. It's not so peachy up the tailpipe of a going away bird. You might as well throw rocks.