Jump to content

Question about muzzle velocity of 75L24


Recommended Posts

Generally HE shells are lighter than AP shells for the same gun. That is because the shells are about the same size, but the explosive filler is not as dense as the steel or other metal used in the armor piercing shells.

But the same lack of what is called sectional density (density divided by cross section area) also causes HE shells to slow down more quickly than AP shells. Essentially both shells encounter similar amounts of air resistance, but the shell with more mass has more inertia and thus retains its speed longer.

Link to comment
Share on other sites

×
×
  • Create New...