Im prolly gonna open a can of worms, and im sure its been on here befor. Im new to this forum stuff, and not very computer smart, so bear with me. Im gonna do a ladder test on a new 300wm. Its a 700 heavey barrel in a mcrees stock. wat should i use to do my test, sand bags, front rest and rear bag, bipod and rear bag, or a sled/vice sorta thing??? i do want to eliminate as much human error as possible, but dont wanna hold the gun back from moving as it naturally should. Ideas, suggestions??