Thanks for all the info guys. The reason I am asking is because obviously my gun shoots both loads, and I have tried both. I currently shot 3" the main reason being the recoil when trying to pattern the gun. The price wasn't a big difference and they both patterned well, but the beating I took was a lot more with the 3 1/2". I am a pretty big guy and it was still knocking me around enough to where I was unable to be comfortable shooting. That situation does not lead to a nice pattern.
Like any one else I never feel the recoil when shooting at a turkey, but there is a lot of time put in shooting before I ever get to that point and I prefer to not be beat up during that time. Which brings me to this:
Buy yourself a lead sled for patterning if recoil is a factor they work wonders.
I now have a Lead Sled. That is what got me thinking about this in the first place. So I am wondering do I put in the extra time to try 3 1/2" again or is it not really worth it if I am getting a good pattern with the 3" I shoot now? Heck, I might even try some 2 3/4" now also. From everything I have read so far I don't think that I need to spend the time and money on 3 1/2", but I do think I will try some 2 3/4".
Again, thanks a lot for all your help and keep the info flowing. I will take all the help I can get.