Zeryn Precision vs Good Enough Ballistic

Dope you can trust — whether you shoot a $400 rimfire with iron sights or a custom rig at 1,000 yards. Zeryn Precision is a data app built by shooters, for shooters. It replaces the notebook, the shoebox of range cards, and the guesswork with one place that tracks your rifles, your loads, your groups, and your barrel — and teaches you every concept along the way. Precision doesn't have to cost a fortune. YOUR RIFLES, SET UP PROPERLY Add your rifle and optic once — about five minutes. Scopes or open sights: blade, aperture, globe, ghost ring. Zeryn takes iron sights seriously, so your lever gun gets the same treatment as a match rifle. DOPE YOU CAN DIAL Zeryn builds a full dope table for your rifle and load — drop, wind, spin drift — in MOA or mils, out past 1,000. Then True Your Dope: tell it where your shots actually landed and it corrects the table to match your rifle in the real world. Book numbers get you close. Trued dope gets you hits. QUICK DOPE No profile yet? Pick a caliber and a factory load and get a working table in seconds — honest about its limits, with a clear path to a trued profile when you're ready. FIND WHAT YOUR RIFLE LIKES Run a factory ammo shootout: pick contenders from a library of 1,500+ factory loads, shoot a group per ammo on any target you like, and log the numbers. Zeryn picks the winner and graduates it into a Load — dope table and all. Stop buying bulk before you know it shoots. BUILD YOUR HANDLOAD Full load development workups — charge ladders and seating-depth steps. Shoot your steps on any target, log your groups and ES/SD, and graduate the winning node into a Load. Custom projectiles are welcome, with a BC estimator for when the box doesn't tell you. WATCH YOURSELF GET BETTER Log groups, browse your group history, and track your barrel over time — round counts and throat erosion — so you see accuracy trends and plan the rebarrel before it costs you. WE TEACH AS WE GO This is the part other apps skip. Every info button in Zeryn explains the concept in plain words — barrel length, sight height, twist rate, focal planes, turret travel — like a mate at the bench, not a physics lecture. A reference library covers BC, throat erosion, jump to the lands, reading wind, and estimating velocity without a chronograph. If you've ever bounced off a ballistics app because it assumed you already knew everything, this one was built for you. WHO IT'S FOR New shooters welcome. Iron sights welcome. The .22 you plink with on weekends counts just as much as a match rig. Rimfire to ELR, hunting rifles to long-range rigs — if you put rounds on paper and want them closer together, Zeryn is for you. Zeryn Precision is free. No account required. Your data stays yours.

Holds you can trust, for your rifle. Good Enough Ballistic turns your rifle's zero, sight height and scope clicks, your load and the conditions you enter into the holds you need at any distance: elevation and wind, in clicks, MIL or MOA. The optional AI Assistant needs sign-in, has daily and monthly limits, and may not be available everywhere. • Holds for any distance, in clicks, MIL or MOA • Wind by the clock: hold 0.8 mil right for a 10 mph wind from 3 o'clock • Station or sea-level pressure, density altitude, temperature and humidity; change any value in a tap • A reticle view with your holds • Trajectory chart and table, supersonic and transonic distances, point-blank range • Up to five cartridges side by side: a verdict at your distance, drop, wind, velocity and energy charts and a data table; each can have its own zero and sight height • DOPE cards with your holds, clicks and wind, to print and share; they work offline • Up to 20 rifles and your bullets, backed up to your account • Reference: popular cartridges you add to Simple in a tap, with guides to G1 and G7, BC, MIL and MOA, the wind clock, pressure and transonic flight • Range mode: large numbers, Sun and Night themes, portrait or landscape The Assistant (optional, adults 18+): AI assistant · Claude by Anthropic. It can explain your trajectory, turn a description of the conditions into inputs, answer questions about your numbers and compare the app's loads for a goal. AI can be wrong. Check numbers against your table. No ads, no tracking, and the calculator works without an account. Privacy Policy: https://gunapp-fefd5.web.app/privacy.html Terms of Use: https://gunapp-fefd5.web.app/terms.html