I have used one several times and they are they way to go in my opinion. I will be buying my Dad one for Christmas. You don't strap the gun in, it just lays in there loose but just secure enough to shoot without moving at all. Your gun recoil pad lays against the rear support and takes the recoil. You can put bullet holes inside each other with the lead sled. I like it for scoped guns. If you shoot open sights the POI will be off due to the longer stock length the lead sled creates. Basically it throws off your sighting perspective with open sights.