I was very impressed with the 180 grain Remington Core-Lokt bullets in my Jungle Carbine. I had previously chronoed the loads at 2310 fps (muzzle) in the shorter barrel of the Jungle Carbine. The bullet entered the front right shoulder on a quartering toward shot at just over 100 yards. The bullet was recovered just inside the hide in front of the left hip. The recovered bullet measured .653" with a retained weight of 152.2 grains and the final result is a hog in the freezer.