I've had this 20ga 870 for some time and has been used only a couple times on squirrels.  My question is:  I may try to use it for turkeys next spring.  It shoots 3 and 3.5 shells and has the 25.5" barrel. 
 I am leaning toward the TSS stuff of which I have no experience but have read good reviews when matched up.  What would be an expected choke, load, and shell to use in it?  Thanks