Very interesting thread this is. I have two questions:
1. Why should rifles have a 1” shorter LOP than shotguns?
2. Is this rule about rifles being shorter LOP than shotguns equally pertinent for double rifles as for bolt actions?
Thanks!
1.) Because proper shooting position for a shotgun is shoulders over your feet, leaned forward, most of the weight on the balls of your feet, with the right heel (if right handed) off the ground enough that you can put a spent shotgun hull under it. In this body-forward, weight forward, position like you're about to give someone a bear hug, your shoulder pocket deepens and requires a longer gun.
On the other hand, for rifle shooting, you have a more erect stance, your elbow on your right hand isn't near parallel to the ground, and your shoulder pocket isn't as deep. This is why your rifle stock is generally shorter than your shotgun stock.
2.) Generally yes. A rifle stock made for running game tends to be shorter because you're assuming a more shotgun like stance as you swing the gun at potential targets that could occur at several locations in front of you, whereas for an aimed rifle (Rather than pointed) you'll have the more erect shooting posture I reference above.