Got a very large cow elk with the 180 accubonds two weeks ago. I estimate it was at 150 yards roughly 6% slope down hill. Shooting a 22" barrel 30-06 using reloads at around 2650fps. First shot dumped it but I put a second in for good measure. Recovered both bullets. One hit the lower leg bone (second shot) but the first came in just below the back strap and was recovered in the front shoulder. all that remained was 84grns of the second and 114grns of the first. The first shot corresponds to the earlier post saying that they should retain about 60% of weight. I didnt need to shoot it a second time but elk are tough and I didnt want to chance it. Im happy with the performance of these bullets.