Thread: 1:8 223 real world data with heavier bullets

Most shops have at least one 1:8 twist 223 (mostly Tikka) for sale so would assume there are a few doing the rounds? Any one care to share their experience with them and what velocities can be expected with heavier bullets in the 70gr plus, especially with the 75gr or even 80gr Eld M bullets. I had a play around on Quickload but just want to make sure the theory and real world reality correlate.