Two refusals, and eleven good leaves
On this page11
The first refusal
Smokeless powder storage. It belongs in the factory container, with the factory label, and not in a jar, a tub or anything else this catalog sells.
The second refusal
Primers. They are impact sensitive by design and they are supplied in trays that hold them separated and oriented. A jar of loose primers is not a storage solution.
Which leaves eleven leaves we are genuinely good at
Brass cases, cast bullets, jacketed bullets, gas checks, shotgun hulls, wads, general reloading components, patches, case lube and bore solvent.
And the archetype fits those well
"Small dry parts. Wide mouth to get fingers in, clear so you can see what is inside." 210 jars against 27 bottles, and 91 clear containers.
It also describes the two we refuse
Which is the problem with an archetype assigned per group: it has no way to say that two of thirteen leaves should be routed elsewhere. The property says it instead.
The law does not help here
Smokeless propellant for small arms is ammunition under the definition, and ammunition and its components are exempt from the federal explosives regulations.
So there is no rule to point at
Which is exactly why this property states a refusal rather than quoting one. An exemption from a licensing scheme is not a statement that a material is safe to put in a jar.
Black powder does carry a number
Commercially manufactured black powder is exempt in quantities not exceeding 50 pounds. That is the one federal quantity figure within reach of this property.
And storage limits come from elsewhere
NFPA 495 and state and local fire codes set the quantities that matter in practice, they vary, and this property does not reproduce them.
Read the powder page even though we sell nothing for it
Because the reasoning is the useful part, and because the same instinct that puts powder in a jar puts primers in one too.