I used Federal 3" #4s out of my 28" Stoeger w/ it's factory turkey choke. I thought he was around 35 yards when I shot. Wound up being closer to 45. Dropped him like he was shot with a cannon. I didn't count the pellets, but his head and neck was messed up. Only about 8 pellets in the body.
Idahoducker, great bird! I too got my first turkey this year. 30 minutes after daybreak on opening morning, with my new shotgun. It wasn't nearly as nice as yours though. Just a 15 pounder with a 4 3/8" beard.