BlackBerry Ballistics calculator software

Here is the BlackBerry program. This is the standard GunSim calculator engine in pocket-sized style. It has 2 screens, and remembers what you typed in last time. That would be good enough for me. Having 10 saved items would be good, as would a GPS atmospherics lookup. But for a free program it is pretty durn good. Here is a link at the BlackBerry Ballistics calculator software at GunSim. It is at the bottom of the page.

Ballistics for Blackberries.

This took all day. Blackberries are odd. I suppose I'll do a simple version to give away free with the desktop program. I don't think you need a lot of features in the field, am I missing something?
I could GPS the atmospheric conditions I suppose.

Ballistics for Smart People

You can put your ballistics chart on a luggage tag, and color code your scope turrets.
There really is no excuse for Point Blank Range, and being too lazy to adjust your scope.

Ballistics Charts and Nail Polish

If you zero your rifle at 100 yards and the adjustment for 200 yards is 7 clicks, you can use the nail polish you have left over from Halloween to make life easy. One dot for 100 yards, 2 dots for 200 yards, 3 dots for 300. You can see the dots without moving your head by closing your scope eye. Just in case it wasn't obvious to you. Acetone removes the nail polish when it is dry. You could color code it. You may as well do your door keys and trigger lock keys while you are in a colorful frame of mind. (Electric Yellow from the dollar store, with highlighter pens to change the color).

L115A3, 338 Lapua and Craig Harrison

Here we have Craig Harrison's 8,120ft shot in Afghanistan. I don't know what the temperature was. With no wind, spin drift is over 12 feet, I expect they have ballistic computers to account for that. 1 MPH wind is 70". You would need a quick-adjust canted base or canted rings, 299 clicks is a lot (221 0.1 Mil clicks). The speed of sound is about 1100fps, so we have the dropping below the sound barrier problem too.
Danger Space for a 20" target is only 9 yards at 2700 yards, rangefinding would have to be within 0.25%. You might be able to get 27" groups at 2700 yards, the sound barrier effects would need to be small.

Ranging on non-Ranging Scopes

Let's say the thick part of your crosshair covers just over an inch at 100 yards at 8x magnification. See the picture to the left. The black and white squares are 1" across. The crosshair doesn't cover exactly 1" though, so it isn't much use.

Turn the Zoom down to 5 and the thick crosshair now covers 2" at 100 yards. So you can set zoom to 5 and now you have a 2" ruler. At 200 yards your crosshairs will be 4", at 300 yards your crosshairs will be 6" and so on. Simple stuff. If your crosshair covers a 4" thing, the range is 200 yards. You can use any part of the crosshairs, any measurement units (inch, cm, gopher), and whatever zoom you have on your scope. If you scope is adjustable, you will be able to find some easy unit to work with. Laser rangefinders are better, but you might not have it with you. I used the desktop GunSim ballistics program for the illustration, you can adjust the reticle size on that one. If you have a Mildot reticle on a 15x scope, and you turn the magnification down to just over 5x, one "mil" becomes 1" at 100 yards. That is kind of math I can do in my head. Assuming a second focal plane scope where the reticle doesn't zoom.