Gram Crak-R shells give "magnum" performance in 28 gauge and .410 bore without high recoil. They provide target smashing/killing power at moderate to long range. Gram Crak-R shells are buffered, NON Spred-R loads. Buffering the shot causes better pellet distribution and retained speed and energy downrange. These shells are the world’s first and only commercially manufactured .410 and 28 gauge buffered loads.