Assertion: barrel | /r/HasAspect | less time
Facets:
value: for complete combustion
type: PURPOSE
Source sentences:
text: The size of the flash depends on factors such as barrel length (shorter barrels have less time for complete combustion, hence more unburnt powder), the type (fast- vs. slow-burning) and amount of propellant (higher total amount means likely more unburnt residues) loaded in the cartridge.