I compare velocity out of my 16" guns with IMI and LC M193 ammo and my loads are close in velocity which should mean close in pressure.
MK262 is the only standard I know of that runs 5.56 pressure. It runs around 2750 fps in an 18" barrel. Armedferret says he's getting 2740 fps in his 16" gun with the 77 smk and you said you see about the same. To me that is "really hot".Formy posted some 16" results with MK262 at 2633 the other day. I'm not sure if it's altitude or chrony differences but it's interesting.
Last edited by TWR; 03/01/19. Reason: Found actual numbers
