1800 fps is exactly what my chart from Handloader magazine of 180 grain .30 caliber shows for Partitions expanding. At 1900 fps the three bullets into the medium penetrated 18.3" with all three mushrooming and retaining an average of 171 grains. At 1800 fps the same load penetrated 57.7" and retained a 175 grain average with only one of the three slightly mushroomed. The best bullet on the chart of 38 different bullets expanding all the way down to 1400 fps with the classic mushroom shape is the 180 grain Remington round nose Core-Lokt. In our deer camp we never lost a deer hit anywhere with that bullet from the .308's and .30-06's.
