problem with giving out load data for the 3220 is that theres just to many differnt guns that are capable of differnt levels of loads. I could give you loads for my 92 but there way to stiff for your marlin and would blow up an old smith revolver. Best thing to do is look in the loading manual and load the mild loads they give until you get enough experience to work up your own. if you just want a mild load for popping small game or paper try a 100 grain cast bullet with 3 grains of bullseye.
