3 oz is a mighty Stiff load even for the 3" 10 gauge. In proportion to bore diameter, this is equal to a 2 3/4 oz 12 gauge or a 1 7/8 oz 20 gauge load Of course, with the 10 gauge in the US for most purposes we do not have the option of Stepping Up a gauge.


Miller/TN
I Didn't Say Everything I Said, Yogi Berra