Originally Posted by joseph
Try this: Just for chuckles put down pressure on your scope with your hand when shooting with the bipod. You may see a big change in your group size. I have seen quite a few rifles shoot a much smaller and rounder group using this trick. If this works then you need to figure out how to change the position of where the bipod needs to be moved. (closer towards the trigger or closer to the muzzle). Also sometimes your load development can also help.
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I'll go one further.
If you encorporate your rifle sling so that you just loop your left elbow through it you put downward pressure on both ends of the rifle, directly over the bipod and rear bag/monopod.
You would be amazed how well this can steady things up.
Essentially you are hanging about 30lbs or more from those points if you have your sling adjusted properly.
I do this frequently shooting from the prone in the field with my left arm curled around where I use my left fist as a rear bag. As I tighten or relax my fist I have a very high degree of control over the vertical.