From the shop floor
Notes on feeding, sorting, weighing and inspecting ammunition, from the people who build the equipment.
Wrong Caliber in the Box: Preventing Mixed-Caliber Ammunition
A mixed-caliber round can be perfectly loaded and still dangerous. What an official 9mm-in-40-S&W box notice and SAAMI guidance teach about keeping the wrong cartridge out of the box, and how headstamp and length sorting stop it at the source.
Why Sampling Misses the Bad Round: The Case for 100% Weight Inspection
A published recall found about 1,024 double charges in a 440,000-round lot, roughly one in 430. Here is why random sampling can miss defects that rare, and how weighing every round to a tenth of a grain, inline, changes the math.
What Ammunition Recall Notices Reveal About Out-of-Spec Rounds
Recall notices from Winchester, SIG SAUER, Federal, Remington and Hornady show the same failure modes again and again: charge errors, squibs, wrong propellant, high pressure and the wrong cartridge in the box. Here is what each one means for inspection on a loading line.
The advantage of weight as a quality control measure in ammunition production
Every defect that matters changes the weight of a round. That makes a tenth-of-a-grain scale the broadest single check a production line can run, and the one that pays for itself fastest.