>>64389060
>lighter weight
No weight savings over TV case

>lower volume
lel pic. Textron boondoggle 20rds 6.8 magazine has same height as the 7.62x51 NATO PMAG 25 so much for the "lower volume" meme

>higher pressures
plastic ammo with steel head can do 80K easy (and up to 100K see Abrams tank ammo)

>vastly reduced chamber and barrel heat up
just doing plaslitc ammo like TV already does that (extracted ammo is cool to touch near zero heat transfer into chamber)

>simplified ejection and extraction
moving chambers is adding complexity not simplifying

>improved accuracy
long free-bore and chamber misalignment educe accuracy

>reduced recoil
has nothing to do with the case