I'm sure this has been discussed before, however, a discussion I had a couple days ago got me thinking.
I was in Boston and asked someone how far something was from Boston. They answered about an hour, I realized that they answered a distance question with a time.
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Maybe LONG RANGE should be defined as how LONG it takes a bullet to go down RANGE to its target?
I've thought about this, and it seems that for the firearms I shoot, LONG RANGE is any target that is a second or more downrange. This seems reasonable, as the load I shoot in my 7mm Rem Mag can go around 750yds in a second (seems like Long Range). The load I shoot in my 338AM can go a bit over 900yds in the first second. And a little 22LR goes 200-250yds in the first second (250yds seems like Long Range for a 22LR).
What do you all think? Maybe 3/4 of a second is Long Range?
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Last edited by AJ Peacock; 12-06-2007 at 01:34 PM.
HMMM....My physics is a few years old, but if I recall correctly on rotating bodies, (as opposed to spinning, which is over or underspin) the lift is so negligible as to be a non-factor. On underspinning bodies, lift can be significant, though.
Lift occurs when the air pressure above a body is lower than air pressure below the body. That is usually caused by having the top of the body present a longer surface to the air, thus requiring that attached air to go further over the body to create lift. The wing is therefor assymetrical in side view. A golf ball creates the lift by trapping the air with the dimples and forcing the air over the ball, also lengthening the path the air must travel, creating a low pressure void on top of the ball.
Bullets, however, rotate, and therefore cannot be asymmetrical or create lower pressure on top than below. So I can't figure out how they create lift.
Nevertheless, the difference is so miniscule as to be not worth arguing over!
Not so... you are talking about wings - this is bullets.
Apples and oranges.
If you take a flat stick like a ruler, and stick it out a window of a moving car, you will quickly discover lift without airfoil.
I won't go further with this, because you don't have the physics to continue.
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Last edited by CatShooter; 12-06-2007 at 08:47 PM.