A tabular representation of propellant combustion speed allows for the categorization of various powders used in rifle cartridges. This categorization, often presented from fastest to slowest, provides a relative understanding of how quickly each powder converts to gas, generating pressure to propel a projectile. For example, a powder listed near the top signifies a rapid burn, suitable for smaller cartridges or lighter bullets, while a powder near the bottom designates a slower burn, often preferred for larger cartridges or heavier bullets. This data is crucial for handloaders, enabling them to select powders that match their specific load requirements.
Accurate load development depends heavily on understanding propellant behavior. Selecting an inappropriate powder can lead to dangerous pressure spikes or inefficient, inconsistent performance. Historically, propellant development was largely empirical, but modern advancements have produced more predictable results. Access to organized combustion data allows handloaders to make informed decisions, maximizing safety and accuracy while minimizing the risks associated with experimental loads. This knowledge also enables a better understanding of factory-loaded ammunition and its performance characteristics.
