Both of them hit at the same time Jim if neither chutes open......
I guess in relation to Sentry's workings as he points out 9.8m/sec2 is the rate of gravity plus the friction of the air on the projectile will also decrease the range the bullet will travel in the horizontal plane before it hits the ground I was going along a harder question on which came first "The Chicken or the Egg?"
Your not alone Gil I will stand in your corner once I leave mine.......by the way Gil picked up an old Parker Hale shooting jacket patch the other day will get a pic of it and a few others I have for you to look at (We will look at them together in your corner so the others won't see)