A different factor is always to gently seat primers to compress the protruding anvil flush with the sides from the primer cup. All powders show distinct "behaviors" .... even in precisely the same cartridge when bullet weights vary. As such, you might find just one powder/bullet blend likes a hotter https://federalprimers215m13456.prublogger.com/31173323/facts-about-federal-benchrest-primers-revealed