My then 11y/o son took his first last spring with a Browning Sweet 16 using heavy field loads #6's, 2 3/4 of course. We later found out it has a modified choke. One of the few turkeys that was DRT, never even flapped around, stone dead.

I never use a "turkey choke", only a reg. full.

You"ll be fine with your 1100. Pick up a few different loads and pattern it to see which does best.