Jeagers weren't stocked in maple. You don't want the stock shaped . The parts will dictate your shape.
Jeagers were most certainly stocked in maple. In Steischloss Jaegerbuschen, by Erhard Wolf, there are 4 rifles made in maple "ahornholz".
Actually more than that because one of the numbered guns is actually 2 rifles 2 smooth bores and two pistols all out of maple.
They span the 1st half of the 18th century, to the second half of the 18th century, so it was not a fleeting fad.
I lent out my copy to friend last week or I would give the pages. There are 45 numbered guns in that book and ten percent of them are made out of maple.