.338 arc

[1168]

Spin off from this thread https://m4carbine.net/t/ruger-sbrs/486077/8:

@1168

.338 ARC’s idea is to have subs and supers that operate at a smaller difference in pressure and gas volume between subs and supers, in comparison to .300 BLK. In other words, full time suppressed with no messing with gas blocks or buffers between subs and supers; just change mags. While I know people do that with BLK, there’s a pretty big gas drive difference between subs and supers there, and it is probably at its finest using supers unsuppressed and subs suppressed. Why Ruger is taking this path with a bolt gun, though, I have no idea.

I’ll probably set up a semi- .338 ARC SBR someday like an optimized PSD gun or LVAW to play with that idea.

Anyone have velocities from ultrashort barrels like 8.5”? Or other experiences to convey?

Edit: dang, I forgot about this thread: Huge bullets from AR platform; 338 ARC