They work great - are they as steady as a Harris - NO - but they are way more user friendly. Try to keep the legs at a 90 degree to the rifle. If you have them bent slightly forward you get a slight downward recoil, if they are bent back you get an upward recoil. I have both the prone and sitting lenghts - prone is great, sitting is questionable. I have one set of each height and then put the adapter studs on multiple rifles and am good to go.