Re: How accurate are angle cosine indicators?
I'm going to have to disagree here.
"Gravity only applies during the time of flight that the bullet is traveling in the horizontal distance to the target."
The horizontal distance to the target = laser measured distance * cosine of the angle
Target at 30 degrees up and 600 yards away as measured by laser range finder
Horizontal distance = 600 yards * cosine(30) = ~520 yards
So instead of calculating bullet drop/clicks for 600 yards you calculate bullet drop/clicks for 520 yards.
That statement is 100% Incorrect! Simple physics tells us thatís an incorrect statement. The only time gravity really doesn't come into play is if the shot is strait down at 90 degrees.
Iíve been through too much tactical and long distance shooting training not to mention college courses on physics to believe a statement like that.
One must first have to understand ballistics (not saying you donít), most really donít. Iíve really gotten into the ballistic calculations for the last three years trying to understand it all. Bottom line, Iíve still got a lot learn. When I see or hear people using a ballistic calculator and using a G1 drag coefficient when shooting a boat tail bullets or VLDís and not a 1Ē 1 pound round nose projectile it only goes to show how much they really donít understand what they are doing.
Like I said, a cosine angle will work fine out 300 yards and not very sharp angles. After that, you need to understand the bigger picture.
Ahh, disagreements & constructive criticism, only helps to further discussions and sooner or later we eventually get to the correct answer.
[ 11-28-2003: Message edited by: Jeff In TX ]
Distance is not an issue, but the wind will make it interesting!