RE: 10 or 12 3.5?
 

Two things I'll never do:

1) use a 10 gauge
2) use 3.5" shells

Hal

RE: 10 or 12 3.5?
 

I use a 10 for turkeys, and love it. I also have a Mossberg 835. Both guns carry great patterns, but the 10's is better in my book. I say use whatever gun you feel most comfortable with when you pick it up. With today's after market chokes, I think it's all about how you feel about a gun more so than size of the shell it will hold.