Optical sights can work well for "wingshooting." whether real birds or clays. Started experimenting with them in the 1990s, and they definitely helped some of my friends (and even me) especially with shotguns that didn't fit perfectly.
That said, they do offend some purists. One of my buddies at the time said they encouraged "bad habits," such as not mounting and cheeking the gun the same way every time. Also took one, mounted on my Remington 870 12-gauge (purchased new from J.C. Penney in 1979, believe it or not), to an informal clays shoot at a friend's place back then. Most of the participants were fans/owners of classic side-by-sides--and most broke more clays with the 870 than they did with their guns--even though they obviously weren't cheeking the 870 very firmly or consistently.
Dunno what all that means, but there it is....
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
