I have always been impressed by the full length brass cases developed for the CAWS by Olin. The Russians also have used full length steel cases.
One of the reasons the CAWS failed was the flechette rounds didn't properly stabilize.They have been trying to develop a flechette launching firearm for a long time.
Shot shells and there construction have come a long way even since the 1980's but the real problem is the sheer size of the cartridge. I think if they used modern sabots and maybe rifled bore they might be able to achieve more.
Perhaps the 3 1/2 shells will come to prominence in the future. But I think shotguns in general will always be hampered.
Brother in Arms
|