I know that this has been mentioned in a previous post, but I'll relate my experience.

I was shooting an SXS double with pistol grip in CAS competition, and my middle finger was getting very bruised and sore. I tried the moleskin, bandaids, and other cushions to no avail.

I then put on a lace up buttstock pad, which increased the LOP, and the problem was solved for me. I could shoot the match all day without pain.

HHH