I have shot out to a little over 1000 yards with bi-pod front, sock filled with sand rear. I load develop in the same way and practice this way as well. At the range, I don't shoot off the concrete bench because where I hunt , there are none. I have shot off of tightly packed road dirt, off of rocks, and shale. I have shot off of a grass field and a wooden bench. I can say that any time I ever had shooting issues, not once could I blame the bi-pod. Is there any chance that the difference in grouping ability has more to do with shooting position? The people having trouble, are the barrels free-floated?
Use a Harris on all my guns, never had an issue.
Use a Harris on all my guns, never had an issue.