The overall length for a given barrel length would be much improved as you would have no action length.
https://www.forgottenweapons.com/the...le-for-the-ss/
Think of something like this in .50 BMG. Heck, even something scaled down & lightened in .300 Win. Mag.
IF and that is an IF the design would work with a double feed position mag, make it in .300 BLK using AR mags!!
TED
