This is something that I have been told from a gunsmith. That full length bedding makes the gun most accurate for the first shot, once the barrel heats up accuracy falls off. I dont have any ML bedded, however I do have 3 centerfires bedded with the barrels free floated. Doing this tighten up the groups on these rifles, these rifles all shot good before the bedding so there wasnt a huge difference. I personally know of one rifle that the best group it shot was 2.5 inches at 100 yards. My friend had the action bedded and the gun now shoots under one inch groups, a big difference.