I haven't seen 4x6 duplex loads in years and didn't know they were still available. I killed a handful of gobblers with them back in the early 90's. All I can recall is that they patterned okay out of my 11-87 fitted with a tight extended choke tube and cleanly killed birds out to 30-35 yards. After shooting one box, I didn't buy any more and went back to my favorite Win XX 2 oz loads of copper-plated buffered #6.