Dev1 Galaxy Forum / Ballistics calculator app

Re: Ballistics calculator app

dummy@example.com (greenjeans) — Thu, 26 Mar 2026 18:45:01 +0000

Got the logic done (at least preliminary) for adding temp, humidity, and pressure done, you won't need to try and figure out what the barometric pressure is at your location to use it, you just need the elevation which is easy to remember and a constant (unless you travel) and the app calculates it for you and adds the data to the calculations. Also added a toggle for the main pane to switch from chart-view to an editable notes pane and back. Still have to hook that into the notes column and mod the save function to include the chart and notes, and then it's a LOT of testing and refining from there, possibly a couple more features too.

EDIT: I don't know why the pics are blurry but the app is nice and sharp actually, lol.
EDIT2: VuuPew is an acronym, it stands for "Veteran Unix User's Projectile Estimation Widget", my wife came up with that name, I think it's brilliant.
EDIT3 3-29-2026 : Added wind drift but my math is still off a bit, got everything else done and the save function puts out a great simple printable chart + notes and details, updating the screenie below.

Re: Ballistics calculator app

dummy@example.com (unixuser) — Wed, 25 Mar 2026 09:13:38 +0000

lol I know you are not a warmaker but an hard learner... we all hate maths, but we all need it keep it up

Re: Ballistics calculator app

dummy@example.com (greenjeans) — Tue, 24 Mar 2026 15:04:37 +0000

greenjeans is preparing for hobbies, and has never fired a shot in anger in his life....I mean the metal gongs and paper targets I used to shoot at in competition probably don't like me but ya know....

Re: Ballistics calculator app

dummy@example.com (unixuser) — Tue, 24 Mar 2026 10:50:04 +0000

Greenjeans preparing for war oO

Re: Ballistics calculator app

dummy@example.com (greenjeans) — Tue, 24 Mar 2026 01:01:42 +0000

Grudging progress, I dislike math and it dislikes me, lol.

Ballistics calculator app

dummy@example.com (greenjeans) — Sat, 21 Mar 2026 17:40:36 +0000

Just started work on this earlier, gonna take a while for sure, but I think it will be a cool useful app for re-loaders and precision shooters, plenty of online calculators but not much in the way of local apps for Linux. Very very basic to start with, I start simple and then do one tiny feature at a time, got a basic cli math engine working based on just a flat trajectory (muzzle perfectly level and parallel to the ground).

Example: .308 168gr BC=0.450 MV=2700 fps

Range(yd) | Drop(in) | Velocity(fps) | Time(sec)

0 | 0.0 | 2700 | 0.000
50 | -0.6 | 2606 | 0.057
100 | -2.5 | 2511 | 0.116
150 | -5.8 | 2416 | 0.177
200 | -10.6 | 2320 | 0.240
250 | -17.0 | 2224 | 0.306
300 | -25.1 | 2127 | 0.375
350 | -35.2 | 2028 | 0.447
400 | -47.4 | 1927 | 0.523
450 | -61.9 | 1824 | 0.603
500 | -79.0 | 1717 | 0.687
550 | -99.2 | 1605 | 0.778
600 | -122.6 | 1488 | 0.875