Here's the original pad on my Brno 602 in 375H&Hmag that I had many years ago (one of those rifles that I wish I hadn't sold). It's a hard, ventilated style. It worked well on the 375 but not my friends 300WM (also a Brno 602 - almost identical rifle to mine). So it worked on the big push recoil but not the fast sharp recoil.