710FPS from a bolt rifle. My wifes ruger that will fire these rounds works real well for a tree rat killer with nice clean head pass thru shots. I do have a F-1 chrony that shows 648 fps average.
Better yet you all probbaly have enough pocket change to buy a box.at 2.75 a box. Buy some ,try some make up your own minds or go watch some videos on it. Try to understand the difference between this and a 20 something grain CB that not good beyound just a few yards.