I've not had the chance to shoot the ELW with good glass on paper. We did shoot it to 1050 with the nightforce, but didn't shoot groups that day. I have got it sub MOA with a horrible 9x hunting scope.... so maybe a SS match barrel would get closer to 1/2 MOA, but MAN!... if I had to carry and SPR type gun on foot, I'd not hesitate for a minute to make it the ELW.
All of my recent BCM CL barrels have been capable of MOA or even SUB MOA performance with good 77s at 100 yards. The shock to me was that the ELW would hang right with the fatter barrels. The Tapered shape may play a role in that. But I'm not sure.

