I would have no use for either but I would like to know which one could make the throat stay in one piece in 500 shots!! I'd bet both would clean the first 1/4 inch of rifling out in no time.. that's alot of powder being burnt in a .284 diameter, alot!! I would more than likely go up in bore diameter.. the good ole. .308 would change things alot and the barrels would remaing in one piece alot longer.. could you imagine the spider cracks in the throat in 300 shots.. it would look like a tarantula live there..other than long range banging and I mean really long range banging what would the need be for such a toy other that to say that you got's one.......