Yes, several of the turn-of-the-century top guns were from Iowa.
Fred Gilbert, his BIL Russell Klein and John Burmister operated the Okoboji trap club in Spirit Lake. Both Klein and Burmister were also accomplished shooters.
Charles Budd and Burmister operated a trap club in Arnolds Park, Iowa on West Okoboji Lake.
Charles Grimm was also from Spirit Lake, and at the 1899 Grand American Handicap at Live Birds Grimm was second to Tom Marshall