Jack O'Connor once wrote that most people shoot a rifle with a LOP that is too long, and a shotgun with a LOP that is too short. Not that I think everything JO wrote is gospel, but after having been fitted many years ago, at the beginning of my stint in the NSCA that ended in Master class, I have to agree that for much of my life my shotguns were too short in the length of pull.
However, the right LOP for pre-mounted clays is usually a bit longer than the ideal for "low gun" or field shooting, especially so for colder weather.
As to how to find the best LOP for you . . . . . before I started any changes I would spend $30 for a copy of The Stockfitter's Bible by Rollin Oswald.
A few nuggets of wisdom from that chapter to whet your appetite:
"A stock of slightly greater length tends to reduce felt recoil slightly."
"The length of the trigger-hand arm has little to do with stock length."
"Changing the LOP one-half inch will change the distance between the nose and the thumb approximately two inches in the same direction. The ratio is very close to 1:4. It is mysterious and, to my knowledge, has never been explained satisfactorily, but is accurate."
"The most important (stock) dimension (is) drop at comb."
If you buy this book and regret the purchase I will buy it from you at purchase price and give it to someone.
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