Powders listed by default for a specific caliber and bullet combination need to deliver loads that meet the following criteria:
Achieve Fill Rate > 80% and < 100% while not exceeding allowed pressure (loads below 80% or above 100% are typically considered unsafe). The thresholds for revolver and pistol loads are > 60% and < 100%.
Pressure for loads < 90% of Max. Standardized Pressure
Propellant Combustion for rifle loads > 90% (lower values typically lead to unsteady results and strong muzzle flash)
Propellant Combustion for pistol/revolver loads > 80% (lower values typically lead to unsteady results and stronger muzzle flash)
For subsonic loads :
Muzzle velocity for barrel length below the speed of sound
Fill Rate > 25%
Propellant Combustion > 75%
IMPORTANT:
Powders that do not fulfill these criteria are not listed by default for a caliber and bullet combination. However, you might want to use the Personalized Load Calculator on the page to get more results by setting some inputs differently, i.e., reducing the Safety Buffer, reducing Min z (minimum powder burn), or Min FR (minimum fill rate).
Also, load tables only show powder brands that are active in a user's settings.
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