BWalker,
The biggie I've found with E-Tips is seating depth, whether the original or grooved version--which is what I've also experience with the other monos. In general I have found E-Tips easy to get to shoot well by fiddling with depth. Early on one rifle (a .308 Winchester of all things) shot one batch well, but not a second batch. Since then have not had any difficulty that I can recall. My .257 Weatherby shoots the 100 E-Tips into an inch at 200 yards--usually less.
