Recent content by lampshade9909

  1. L

    Calculating bullet velocity reduction over time

    I dramatically simplified my solution here. I'm now using what I call "Voodoo Ballistics Physics". Here is the source code in its current form if you're interested (C#). I'm basically giving weapons some values like "Damage, Penetration, Fragmentation, etc", and then just doing an extremely...
  2. L

    Calculating bullet velocity reduction over time

    When I change Grain (weight) my numbers are updating. But when I change caliber(diameter) the results do not update... It's possible K^2 made some generalizations to simplify things for us and as a result caliber won't be taken into effect here...
  3. L

    Calculating bullet velocity reduction over time

    I don't have the time to dig into your excel sheet right now, but if you're looking to translate his formula's into excel I've already done that and would be happy to share it with you. This should save you a big headache!
  4. L

    Calculating bullet velocity reduction over time

    That makes sense. I appreciate the input. I can make something really cool out of this. An educated estimation is exactly what I'm going for here. Thanks a bunch!
  5. L

    Calculating bullet velocity reduction over time

    Great, thanks! How will penetration work? I'll give an example. An M4 with a muzzle velocity of 885 m/s fires a 45 grain 5.56mm round at 50 yards towards its target. Through the physics equations you've provided I've determined that the Kinetic Energy is 930.6 J. I probably require way...
  6. L

    Calculating bullet velocity reduction over time

    Hey K^2. When calculating Drag Coefficient. Where you said "CG is a pre-determined factor of the G1 model used by manufacturers. CG = 0.5191." Does this CG value have any units? I'm using a B that has kg/m^2 rather than lb/in^2. And I'm using a d of m rather than in. Will that effect CG at...
  7. L

    Calculating bullet velocity reduction over time

    Hi guys, my game is progressing very well! Here's a glimps of the game in action: https://www.dropbox.com/el/?r=/s/sfxnjxup8teigly/IMG_1780.MOV&b=clk:88621065:17765332785333273812:1124:558&z=AABNuWcYbfodXs2JMLely37u78tD0QUPFWQ4mpXqfP-6cA This is going to be one fun and addictive game! I...
  8. L

    Calculating bullet velocity reduction over time

    Thanks for the links, and nice find on the calculator!
  9. L

    Calculating bullet velocity reduction over time

    I did find a spreadsheet with some brands/specs of ammunition with BC values. It's a good way to help me estimate basted on ammunition types/shapes/grains.
  10. L

    Calculating bullet velocity reduction over time

    Thanks for the help everyone. You have provided me with some excellent resources. I'll need some time to study this information, and program it into my application. I'll try to reply back with an update! Thanks again! Lamp
  11. L

    Calculating bullet velocity reduction over time

    I'm developing a 2 Dimensional iOS war game, so think guns bullets damage hit points etc. I'm trying to write a function that calculates the Velocity of a bullet at a certain distance, so that I can calculate the force of the bullet at a certain distance. So let's say the that Rifle A is...
Back
Top