I purchase a hundred or so rounds of Prvi-Partizan/PPU 55FMJ ammo whenever I'm in Wal-Mart, at $7.97/box of 20. It's cheap and it's generally available factory ammunition. That's a lot for bullets, but the same price also includes some decent Boxer primed brass and pull-down propellent.
They are intended for a project involving pull-down with an RCBS collet puller.
First, the average charge will be determined, and a smaller batch reassembled with greater care matching that average charge of the original propellent to establish an accuracy benchmark.
Next, some load development with the same components.
Next, that same developed load with once-fired, F/L resized brass and standard commercial primers, and a final check with match primers to see if they make a serious improvement. Usually they don't with these humble components.
Greg
Last edited by JarheardNY; 07/23/15.
