Ive got a lead sled. Not saying nothing else will work, but they are great to find out if a load is truely accurate. Its dead steady. Or use sand bags or what ever, just need to be rock steady with out the varibles of the "shooter" interferring. I reload and it saves me time and money to know what loads work and which ones dont within afew shots or acouple groups. I also let my bolt open between shots to let the barrel cool as much as possible between shots like one fella mentioned.... Thats off the bench, once I find my "load" I like, throw all bench goodies and benchaway and practise to see how well the "shooter" can really shoot.