I tested the 338 cal 200 gr E-Tip in my 338 RUM. Using a COL of 3.620" and 90.5 grs RL 22 yielded a MV of 3111 fps from the M700 LSS 26 inch barrel. Accuracy was well under an inch, I can't give you an exact size because I forgot to take the target down! I recovered two bullets at 100 yds that were shot into water filled milk jugs, both found in jug #6. The first bullet weighed 197.1 grs, expanded to .738" and the second weighed 197.0 grs, expanded to .748".