I always try free recoil on my rifles, then lay on it for the next group to see if there's any difference. Sometimes there is! My .270 likes free recoil... I use my left hand to fine tune the crosshairs under the stock and pinch the trigger with thumb on the trigger guard & forefinger on the trigger. My .338 WM, of course, likes a very firm hold. Groups shotgun when I free recoil it. Off the bench, the bottom of the scope ticks the top of my glasses on every shot. First time was a bit disconcerting, to say the least! Doesn't happen when in any other position, even prone on a bipod.
When it comes to getting those upside down smiley faces on your forehead, the worst one I ever saw was at Angeles National Forest range outside of LA. An older guy (back in the days when I wasn't one of them) had a kid naybe 16 or so, at the range for the first time. It sounded to me like he was a neighbor kid or something. He gets this kid on the bench with an old Win 30-06, explains to the kid to sqeeeeeze the trigger and keep the rifle tight into his shoulder. I'm not paying a lot of attention but I had just finished a group and looked over to see the guy standing behind the kid with his hands on his shoulders, staring intently at the target. The kid, unfortunately, had apparently never used a scope before (probably hadn't ever fired a rifle before, either!) and had his eye screwed into the ocular lens! I yelled, "DON'T..." just as he pulled the trigger. Knocked this kid silly and the guy is saying, "hmm, I don't think you..." when he looks down and sees the kids head lolling around while the blood pours from his eyebrow! "Oh lord.." was all he got out. I took a roll of paper towels over and handed it to him and said, "Ya don't have a .22, huh?" then went back to my lane. Poor kid probably never shot another gun in his life. I hate it when people try to impress their friends (or wife) by handing them the latest .450 Superpooper to show everyone how tough they are. Idiots, as far as I'm concerned. But there are times... when I was about 6 my uncle (then about 15) convinced my step dad that sure he could shoot that ought 6... so dad let him. He squatted down and torched off a round which knocked him right on his kiester! This is the same uncle that ultimately became my shooting & hunting mentor but at that time we all laughed like loons at him!
Cheers,
crkckr