Hunting on a navigable waterway

[cougars48]

So this question is one i had never thought of until last night when it happened to me while duck hunting on a very small island in the Wabash river, small enough to not have be owned or marked on the GIS website. If during shotgun season a deer crosses the river and come on to the island that i am hunting ducks on can i legally shoot it? Barring I have orange on and a rifled slug on hand.

[morrison]

Under most circumstances, the answer is yes. However, the limitation occurs while you are duck hunting. Federal regulations prohibit the possession of shells loaded with anything other than non-toxic shot while waterfowl hunting. Therefore, you are restricted by federal regulations from possessing the ammunition legal for taking a deer in the state of Indiana.