I think most folks shoot a gun too short. I don't know why, but they do.
Brent
Interesting Brent. Some of the best shooters of all time have advocated short stocks. I believe Rudy Etchen, certainly one of the best American trapshooters, advocated using the shortest gun possible. He felt that swinging on hard angles was much easier with a short stock.
If you know much about trapshooting evolution in this country, as the targets got easier (3 hole to 2 hole and shorter distances)the stocks got longer. It was not necessary to make that sharp swing any more.
The old bend the arm 90 degrees and measure from the inside crook to the last joint on the index finger still is a fair initial assessment for LOP. Now, with double triggers the equation is not as easy. I personally think measuring the LOP to the front trigger leaves the stock a bit short.
As for getting whacked with the trigger guard, I have not seen anyone mention that some front triggers are further away from the back of the guard than others. Seems to me that could make a significant difference.
Regards, Jake