Shotgun patterning is an art, not a science. Every shotgun barrel is a law unto itself where patterns are concerned. The only way to know what any given barrel/choke tube/load will do, is to pattern it. My advice is to start with the least expensive choke tube you can find (likely the regular FULL choke tube) that fits your gun properly, buy a variety of turkey loads from different manufacturers' product lines, and get an end roll of newsprint from your local newspaper for patterning paper.
That will tell you what load works best with the choke tube you have. If you can't find a load that makes you happy with the first experiment, buy another tube and try again...
lpl/nc
