Lite Barrel Shot Question (Old School 1100 and A5 "Lead Only")

[Spurs]

I posted this on the 20 gauge area, but I would like input on a couple of old school 20s that have been in my family for a long time.  The 1100 mention is actually the gun that I killed my first turkey, duck, and squirrel with.  I shot my first turkey with some high brass #6 squirrel loads, but wanted to see if there were more opinions on the use of TSS/Hevi loads with the manufactured Full choke bbl.

Question for the masses regarding a Rem 1100 20 and Browning A5 20:

Both guns have a "Lead Only Barrel" that is the manufactured Full choke.  Also, both are 2-3/4" receivers.

Has anyone produced a custom 2-3/4" load with a Full Choke that can put good numbers on paper?