I have been shooting off Harris bipods in the field for the better part of my hunting career. Never noticed much of a problem with them before.
Lately I have sworn off the bench and benchrests and have gone prone for practice, load development, everything.
Since I have started using the Harris bipods on concrete I have become aware of how much they bounce when the shot is fired. I have still been getting good groups but have to wonder, would I have a different point of impact if rested on a softer surface?
When I am through hunting predators for the year I'll get out and test this, but thought someone here may have already done it.
You tend to get more flip on concrete. Depending on shooting style also, if you suck it in shoulder pocket firmer may get less jump . My light 325wsm jumps bad.The Atlas is a great bipod and I find myself putting more rails on other rifles of mine. I have a QD, that mnts to rail,the SEEKIN SRS, is the rail I like.
Surface texture/hardness can definitely effect accuracy with a bipod. I was at a match a couple of years ago. My regular range has smooth wood benches. My rifle was shooting great. Went to the match at another range with heavy weave base carpeting in the bench. My impact points were off by inches at 200 yards. I put a piece of plexiglass under the bipod legs and my rifle's performance returned. The bumpy weave was bumping the legs during recoil. Soft surfaces do not seem to cause this problem. I use a Harris.
"Let us speak courteously, deal fairly, and keep ourselves armed and ready"-T. Roosevelt