April 14, 2026 · By Diane Johnson
A reloader does not say their load is "pretty good." They say it ran 2,847 fps with an SD of 6.2 and a mean radius of 0.41 inches at 100 yards. That sentence is the whole design brief for LoadOut. Serious reloaders think in exact numbers, so the app stores exact numbers. Everything else about the data model falls out of that one decision.
We want to walk through the choices we made and, just as importantly, the ones we refused to make. Most consumer apps would have shipped a five-star "accuracy score" and called it friendly. We think that would have been useless to the people we built this for.
A load is not one number. It is a recipe, and changing any ingredient changes the result. So a LoadOut record carries the complete set of reloading variables, not a curated subset:
We considered hiding the less-touched fields behind an "advanced" toggle. We didn't. If you swap primers six months from now and your groups open up, the only way to know why is to have logged the primer the first time. Half a recipe answers no questions later. Every record also keeps photo evidence, because a number in a field is a claim and a picture of the actual cartridge, the loaded tray, or the target is proof. Memory is unreliable. The photo is not.
Here is where most apps go wrong. They collapse a string of shots into a single rating, lose the underlying data, and hand you a number you can't reproduce or argue with. LoadOut does the opposite. It keeps the per-shot record and computes the statistics reloaders already use to make decisions:
These are defined terms with agreed meanings. An SD of 6 means the same thing on your bench as it does on a match shooter's. A "4.5 out of 5 accuracy score" means nothing to anyone, because nobody knows what went into it. We compute the standards because the standards are what people trust, and trust is the only thing a reloading log is for. A vague summary is worse than no summary. It pretends to know something it doesn't.
The reference catalog leans on real SAAMI specifications rather than numbers we eyeballed: 203 cartridges, each with its published spec. Around that sit 1,400-plus bullets, 200-plus powders, 70-plus primers, and 213 scopes. Building this was tedious. We did it anyway, because picking your cartridge from a real list beats typing a number you half-remember, and because the catalog is the spine the rest of the data model hangs on.
One thing to be clear about: LoadOut is a tracking and reference tool, not a source of load data. It will not tell you what to load. It records what you loaded and how it shot, with precision, so your own results become the data you trust.
Your load data lives on your device. Not on our servers. We don't track you, and there's no general analytics phoning home what you shoot. This was a deliberate call, and it cost us the easy telemetry most teams lean on, which is a trade we'd make again. Your load development is yours, it works on the range whether or not you have a signal, and we never have to ask you to trust us with it because we never hold it.
That's the bet underneath LoadOut: store exactly what a serious reloader actually tracks. Explore LoadOut →