IF YOU HAVE BULLET INTEGRITY, AND AN APPROPRIATE MEPLAT, FOR REVOLVERS THE TKO FORMULA TELLS US THAT BIGGER (MORE DIAMETER), HEAVIER AND FASTER ALL CONTRIBUTE TO A HIGHER TKO VALUE, AND MY EXPERIENCE IS THAT HIGHER TKO VALUES TRANSLATE TO BETTER RESULTS IN THE FIELD, BUT YOU GOTTA HAVE BULLET INTEGRITY AND AN APPROPRIATE MEPLAT.