I have been loading .575 RB IN TC wad and Cheddite hulls and having fun shooting them. I have been looking for a load using AA hulls with TC wad and found a 7/8 load using 17gr of herco. My question is would this load be ok to use considering the .575 RB, TC wad and 2 hard cards under ball and 1 under wad weighs about 300grs. The reason to use the AA hulls is I have several hundred once fired.Any help would be appreciated.