IMHO - The original Krag metal Butt-Plate looks best.

At the Range, I wear my stylish Norfolk Shooting-Jacket and a Deer Stalker Cap ....  ::)

Actually, I have a couple of heavy 'shooter' sweat-shirts with built in shoulder-padding.

Even in hot weather, I wear a cotton U.S.M.C. style Shooting-Jacket, which has shoulder-padding.

I do have a leather-covered (shotgun-style) Butt Pad. It slips  on and is secured with a velcro strap. It can be used on a rifle, but, I haven't found it necessary.

I am not Rambo. I only shoot .22's and pistols, in a 'T'-Shirt.