And these are big sized angmos. Still the G11 almost jumped off
their shoulder with each burst.
It is a pity caseless didn't move forward. Definitely is the
biggest step forward for firearms in more than 100 years.
Do you know that some of the caseless ACR ammo were "flechette"
rounds?
Fechettes are basically darts, like nails with fins. The flechettes
fly straighter than conventional bullets and they can pack 3 into
one cartridge in some cases.
After caseless was abandoned, they tried putting the flechettes
into standard cartridges. Again, can't remember how that
went...
Anyway, shotguns shells with flechettes are available.