Not being a smart aleck, really want to know: Why do 12 gauge loads of 1-1/4 to 11-1/2 oz of shot, in other words loads heavier than 1-1/8 oz, seem to work fine, but loads heavier than 7/8 oz in 20 gauges, don't? I only load 7/8ths /20's, so just askin'.