Great question and I can not give that exact answer right off the top of my head, althought at one time I knew the answer.

I believe Dave can build the nose of the bullet to match a range of velocities that the bullet may be subjected to, as a matter of getting the best Terminal Performance. So with that in mind the optimum velocities ranges for the 250 - 275 -300 may be different for each bullet.

The 40-200 that I used last season was a great test for that bullet. I shot a whitetail through the chest cavity @ 180 yards. It left the barrel right at 2200 fps and according to the ballistic tables it would be going about 1475 fps at that distance. It worked great. Two nice neat holes in and out and one heck of dark red pudding mix in the cavity. Part of the heart did survive but everything else was mush.

I no this doesn't answer you question specifically but I know it is computed in the design process of the bullet.

I will try to get the specific information from Dave.

mike