Standard-length shotgun buttstocks have always provided me with liberally bruised cheekbones, sore nose from emphatic contact with the base of my thumb, and lots of frustration.
I'm lanky enough that few shotguns fit me.
Recently I've been using a Galco Recoil Pad to add length.
Available in five different sizes to fit almost any buttstock, the slip-on pad is made of Latigo leather and contains a 1/2-inch-thick pad of recoil-absorbing gel, so it helps reduce felt recoil as well.
On particularly short stocks, I'll add a homemade spacer to increase length of pull even more.
Well-made and attractive, it's a great solution when borrowing a shotgun or if you have a gun you just don't want to alter permanently.
The pads work great on rifles, too.
MSRP is $78.
For more information, contact Galco USA; 800-874-2526