Reloader7RM,
Like TSX's, or any other monolithic bullet, E-Tips are more sensitive to seating depth than lead-core bullets.
I have been shooting E-Tips since they appeared in 2007, and have encountered very few rifles that didn't shoot them well. My latest range session was with 100-grainers in my NULA .257 Weatherby. With a max load of H1000, three went into .27". I then shot another round to make sure it wasn't a lucky fluke, as many 3-shot groups are. The 4th expanded the group to .37".
