A person who handloads ammunition, typically an enthusiast or professional who assembles cartridges manually.
From 'handload' + '-er' (agent suffix from Old English). Created in the 20th century as handloading became an established hobby and profession.
Handloaders are often meticulous data scientists who track tiny variations—they measure powder weights to a single grain and test different primer brands because these micro-changes can affect bullet accuracy by several inches at 100 yards.
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