MODERN RELOADING data for 9mm lead vs jacketed [Archive] - Glock Talk

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cowboy1964
03-31-2011, 19:26
I thought, in general, lead requires less powder than jacketed for the same bullet weight? So why does that book show the following:

124gr jacketed
Unique 4.8 - 4.9

125gr lead
Unique 5.3 - 5.5

For other powders the min/max seem to be mostly the same (within .1). Why is Unique, uh, unique?

BTW, does anyone know if the powders are sorted in any particular way in that book under each bullet? They just seem to be in random order as far as I can tell.

WiskyT
03-31-2011, 19:32
Lee gets his data from other sources. So the lead bulet load is likely from one source, and the jacketed from another. The real question is why do different sources have such different charge weights if the system used to measure pressure is scientific and therefore repeatable?

Lee does list powders in a specific order, but I don't remember what criteria he uses. It's velocity, or case volume or something like that.

skselby
03-31-2011, 21:22
Nevermind, wrong thread.

fredj338
03-31-2011, 22:18
Just another example of why the LEE "manual" is really poorly done. What lead bullet, what jacketed bullet, OAL, etc. Typically, lead bullets run the same vel & pressures as jacketed w/ slightly lower powder charrges, always. At elast I have never seen them not & I load lead bullets for every handgun round.

JBnTX
03-31-2011, 22:43
... I load lead bullets for every handgun round.


How does lead work out for you in the 9mm?
I'm thinking of switching to a hard cast 125gr bullet.

fredj338
04-01-2011, 09:32
How does lead work out for you in the 9mm?
I'm thinking of switching to a hard cast 125gr bullet.
The 9m & 40 are probably the most diff to get great reults out of. It can be done, it just may take a bit more effort. Casting your own will help as you can control the many variables. Start w/ a 0.356" dia LTC & medium burner like WSF or Unique. IME, if a gun won't shoot lead bullets o/ Unique, it probably won't shoot lead bullets.