I had a friend at the range give a bag of paper roll crimped 12 gauge shells loaded with OO B, that were left by some one. well i tried shooting them and not a one, 36 of them would fire. so i cut the roll off of them and dumped the BUCK SHOT out, they had 9 pellets in each one, stacked in layers of 3- total 9. what i need help with is i want to load the 9, OO B pellets into my 12 gauge brass shells. so what amount of 1 F G black do i put in the brass shells and be safe to shoot in my DAMASCUS barreled shot gun? any and all information will be appreciated. thanking you, toot.