Some interesting images

Monte Carlo, and no way could I rotate my hand like the fella in the foreground. Shooter in the background has a lower elbow and more anatomic grip



This is from the 1900 Olympic demonstration sport; Grand Prix de le Exposition au Tir aux Pigeons, Cercle du Bois de Boulogne.

Lunden won with his straight grip, Mackintosh of Australia on right with a POW



Lunder appears to have elevated his right elbow and rotated his grip somewhat like the guy at Monte Carlo



Mackintosh with a more anatomic position grip