I shoot off a lead sled all the time, have 25# bag of shot on it for weight. I also have a holder that hooks the front feet to the front of my bench. With my bad back I have to limit recoil if I want to shoot pain free. I've tried bi-pods and I need a lot of practice if I don't use some kind of rear support. I have no problems shooting off bags though, except for recoil hurting my back. After 3 Major surgeries it's not going to get any better. The only thing that works for me are injections to keep it in check.