Brasswork

Brasswork is a load-development log for rifle and pistol reloaders. It replaces the paper notebook as the system of record while still printing one. EVERY ROUND TRACES BACK Each batch records the firearm, the exact brass, primer, powder and bullet lots, charge weight, CBTO and COAL, prep steps and the published start and max charge. Every string you fire points back to its batch, so "what did this shoot, and under what conditions?" is one screen. Recipes lock once a batch has been fired; edits after that need a reason and are kept in the batch's history. BUILD A LADDER IN A MINUTE Duplicate the last batch, bump the charge, done. Or switch the builder to Ladder mode: pick a start charge, a step and a count and it creates the whole ladder with consecutive IDs. Batch IDs like 223-0014 are generated for you and shown large for the ammo box, and a QR label sheet prints for Avery 5160 labels so a box opens its batch from the Camera app or the in-app scanner. A warning appears when a charge sits above the published maximum. INVENTORY BY LOT Brass, primers, powder and bullets are tracked by lot number. Saving a batch draws stock down automatically: powder by charge × rounds, primers and bullets by count, brass by lot with a firings counter. Low-stock thresholds flag what to reorder. Scan a component box's barcode or label to fill in the brand, product and lot. Quantity and price on each lot give a cost per round for every batch. Rifles, scopes and equipment live here too. RANGE MODE, ONE-HANDED Big keypad for velocities. Average, extreme spread and standard deviation update as you type. Group size, distance, pressure-sign toggles and a target photo live on the same screen. Measure a group straight off the photo, or import a Garmin Xero chronograph CSV instead of typing. Sessions start with the temperature, pressure, elevation and wind at your location from Apple Weather, and every field stays editable. Everything saves as you go, with no signal required. READ THE LADDER Charge against velocity and group size per firearm or per cartridge, so the flat spots show themselves. Compare batches side by side, then pin the recipe that proved itself on the Conclusions page. A DOPE CARD TRUED TO YOUR RIFLE A G1/G7 point-mass solver builds a drop and wind card for each batch or rifle from your own measured velocities, the bullet's published BC and the conditions you recorded, with spin drift and Coriolis if you want them. Fired strings overlay the card so you can true the velocity to what the rifle actually did, then print it. PISTOLS TOO Mark a firearm as a pistol, revolver or pistol-caliber carbine and the screens follow: crimp kind and case-mouth diameter instead of CBTO, a case-gauged check, a COAL warning against the SAAMI maximum or the length that plunks in your barrel, handgun prep steps, power factor from the chronograph, and strings that start at 10 yards instead of 100. A LIBRARY FOR THE MANUALS Scan or photograph the pages of your reloading manuals into a searchable reference library, tagged by cartridge and bullet and linked from each batch. Text is recognised on the device. YOUR DATA STAYS YOURS No accounts, no servers, no analytics. Records sync between iPhone, iPad and Mac through your own private iCloud. Export any batch, comparison or rifle sheet as a PDF, or the whole log as JSON or CSV, whenever you want a copy. Imperial or metric, your choice. Brasswork records what you load; it does not tell you what to load. Always work from a current published manual and start at the published starting charge.