Anybody shoot TSS? If so how do you like it out if a m3500
665 with most the loads work fine.
I'd buy a choke in the .665-.670 range and kill the smack out of birds.
I have a M3500 with an Indian Creek .670 and 2oz TSS #9's and it shoots great hunting patterns.
Shooting a .665 3 1/2 9's apex only getting about 250 in a 10 inch circle at 40
You're probably overchoking that large of a load of TSS. I shoot an Apex 2oz load of #9's and an IC .670 in an M3500 and get around 360 in the 10" and another 280 in the 20" at 40yds. Try opening it up to .675 or larger or a smaller payload.