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Fire forming brass?
mazo kid
Member Posts: 648 ✭✭✭✭
I should probably just go out and try this, but thought I would get any insight: I form brass for several obsolete calibers and some need to be fire formed. Some brass seems to work OK, but some just doesn't seem to expand well. I was wondering if fire forming using black powder would would work better than the smokeless currently being used, since black powder obturates cast bullets better than smokeless. Or do you need the slightly longer pressure spike of smokeless? Any thought?? Emery
Comments
As long as the headspace is controled (false shoulder etc), you can simply load and shoot a standard (starting load) or use the "fast powder, filler and plug" methiod (weigh out the amount of bullseye required to fill the case, than use 10% of that amount of bullseye, fill the case with a TP or corn meal and plug the neck with wax or soap). This may not fully form the caseing, but will get you close enough to finish the forming with a standard loading for the finished cartridge (for minor forming IE: a Ackley Imp. it's easier to start with the standard load).
One thing you might try is annealing the brass first.