It is best in large straight walled cases and 222 Remington class cases. It is considered one of the best in the 222 Remington and 221 Fireball, but can do well in the 223, 6mm TCU, 7mm TCU and some times in the 204 Ruger and 222 Magnum. As mentioned, the bottle necked cases you mentioned have too large a capacity to use H 4198 effectively. Good Luck and Good Shooting