God yeah!!! Turkeys know no limits. We'll be feeding ours heads of romaine and they take such GIANT gulps of romaine I feel like there is no way they could swallow it.
It sounds like he might have eaten too fast or gotten something too big. I've had turkey hens do this a few times where they eat WAY too much and they have to stand there for a couple minutes to get it all down. Do you see any bulges in the side of his neck? If you do you might be able to help...