PCB: Exterior ballistics software (by Odd Håvard Skevik)

PCB is my own approach to exterior ballistics calculations. 
(Since no cheapsoftware met my demands, I had to make 
something myself.)

PCB will run on all IBM-PC compatible computers with more 
than 512KRAM. The program runs under MS-DOS. Features 
: Menu driven user interface. Fast and self-explaining. The 
results are accurate enough for any practical purpose. Handles 
both metrical and english units equally well. IT'S FREE!

PCB calculates the following: Trajectory data, including 
remaining velcocity and energy. Wind drift, corresponding 
sight settings. The effects of a "canted" gun. Maximum point 
blank range, corresponding zero range. Tolerance intervals for 
range estimations. Ballistic coefficients. Recoil energy and 
velocity. Estimated minimum rifling twist. To make things 
simple, PCB has a database of more than 800 rifle bullets! 
And, as stated before, it's free!

Try it, and let me know what you think. DownloadPCB v1.8

You will need PKUNZIP to extract the PCB program files 
from the archive. PKUNZIP is commonly available, you can 
also download it from here : PKUNZIP.EXE 

Odd Håvard Skevik