Lots of articles out there on the 277 sig/6.8 testing. They said they wanted a round that would defeat all known or planned body armor at 600 yards out a 16” barrel with certain weight restrictions. The 6mm and 6.5mm were in the running too. Apparently the 6.8 did this and the others didnt so they settled on 6.8. Maybe something else would have more energy or less wind drift or whatever at 1000 yards like a 6.5 with same bullet weight but apparently at 600 yards the 6.8 was able to pass their armor tests and others didnt.
I think the higher pressure thing has some good implications for hunting applications. Sig is offering a 150 accubond load that is 2820 out of 16” barrel. Pretty nice potential there for a reasonably compact suppressed big game rifle. Not to mention I bet a 6.5 and 30 cal fury is not far behind.
If you think about it the “270 pressures” (65k) we consider max today have been around for 100 years. Wasnt around but that was probably considered risky and barrel burning in 1925. Seems we have a new 270 round possibly ushering in the next performance step up.
Lou
