SFBL

AcronymDefinition
SFBLSchulungszentrum für Bauwesen und Logistik (German: Training Center for Construction and Logistics; various locations)
SFBLSelf-Filling Blind Loop
SFBLSpring Fever Baseball League (Illinois)
SFBLSneads Ferry Branch Library (Sneads Ferry, NC)
References in periodicals archive ?
The SFBLs were also more accurate, since the powder burned more consistently.
But the SFBLs do burn powder more consistently than longer cases, so do indeed have more potential for accuracy.
Similarly, there really isn't all that much difference between handloading for the SFBLs and "normal" cartridges.
After all, one of the reasons the SFBLs attain their velocities is because they're fat.