Hooked or curved butt plates are the poorest design on a rifle that had recoil.

The hook must be fitted at the arm/shoulder junction so that the toe runs into the armpit and the heel fiting over the upraised arm/shoulder junction - hopefully.

On lightly recoiling guns, NP - BUT - hooked plates demand, due to the butt holding location, that the length of pull be longer than a person who is using a 'classic' design would prefer. Thus if a 13 7/8" pull is comfortable in a normal chest/pectoral muscle hold, you might find the hooked plate rifle needs a 14 1/2" (or longer) pull.

The look quite 'retro' and actually good to many people, but we hates them on rifles that kick - pointy devils.