Load'EmGuide
What to record in a reloading log
A log is only worth keeping if it can answer a question you will actually ask six months from now.
The question your log has to answer
It is nearly always the same one: "that load shot well. What exactly was it?" Everything worth recording exists to answer that, and to let you rebuild the load identically. Anything that does not serve that is decoration.
Worth recording every time
| Field | Why it earns its place |
|---|---|
| Cartridge and rifle | A load is only good in a rifle. Same recipe, different barrel, different result. |
| Bullet: make, weight, BC | The single biggest driver of trajectory. |
| Powder and charge weight | The variable you are actually testing. |
| Primer | Swapping brand changes pressure. People forget, then wonder why. |
| Brass: make and lot | Case capacity varies between makes and even lots. |
| Times fired | Tracks case life and explains a sudden change in behaviour. |
| COAL / seating depth | Jump to the lands moves groups as much as charge does. |
| Date loaded | Ties the batch to the conditions and the lot you were using. |
Worth recording at the range
- Group size, with the distance. "0.7 inch" means nothing on its own.
- Muzzle velocity: the average, and the spread. Extreme spread tells you more about consistency than the average ever will.
- Temperature: powders are temperature sensitive; a load worked up in June can behave differently in December.
- Conditions: wind and light, honestly recorded. A wide group in a switching wind is not the load's fault.
- Round count on the barrel: throats erode, and loads drift with them.
Usually not worth it
Fields people dutifully fill in and never read again: press make, die brand, the exact minute of day, brass headstamp when it duplicates the make field. If you have never once gone back to look at a field, stop collecting it. Every unnecessary field makes the log more of a chore, and a log that feels like a chore stops getting filled in.
Paper or app
Paper works, right up until you want to know whether the 42.5 grain load or the 43.0 shot better across the last five outings, and the answer is spread over eighteen months of a notebook. The value of a digital log is not the recording. It is being able to ask questions of what you recorded.
Load'Em keeps recipes, batches and range results linked, so a group is always attached to the exact load and rifle that produced it, and deducts components from your inventory as you load.