John E. Carty wrote:

I'm also a former combat Marine and could always hit 10 for 10 from the 500
yard line (it was never measured in meters for us) with an M-16 with open
sights. However, firing a rifle from the prone position and firing a handgun
while on the move are two entirely different things :-)

What size is the 10 ring on the targets you were using at 500 yards?

Matt