There are many ways to reduce shooter influence/interference with a shot. That doesn't mean they will all produce the best accuracy.
Some people use a lead sled, some use a front rest with rear bag, some use a bipod with a rear bag or their hand. Probably the potential for the most accurate with the least shooter interference would be a bench rest with front rest and rear bag shooting free recoil but if you try that just remember to watch your eyebrow.
Whatever method you find, and you might want to try several, that gives you your best accuracy may not be the one that simulates field type shooting and your accuracy and point of aim may shift and change with the different methods. You can, by trial and error, determine if you achieve the best potential accuract with a bench rest or a bipod off of the ground. You should then also try the way you will shoot in the field because things change.
Long story short, a bench rest, with proper techniques will probably give you the most potential accuracy. In your case you may find that something like a lead sled gives you the best group potential, you may find a good front rest and rear bag is the best. Do what gives you the best results.