I shot a fellow's .378 custom built "Mountain Rifle" perhaps three shots. It was a lightweight rifle. To say that the recoil was vicious, is almost an understatement. I could shoot my .375 Weatherby, that WAS braked and had a really good recoil pad, about ten to twelve shots before my eyes started to get wonky, but two or three out of that lightweight .378 had me blurred. By contrast, I could shoot my factory .416 Ruger, numerous times in an afternoon, and have no problems. MM