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TheCarDoctor · February 27, 2013, 10:34 PM

First time poster, long time lurker. I've reloaded rifle for most of my life but I'm reloading 9mm for the first time and have a few questions.

I'm using Red Dot powder and 100 gr Speer JHP bullets. My 1992 Hodgdon manual says that the starting charge for Red Dot with a 100 gr bullet is 4.6 gr and the max charge is 4.9 gr. However I can't find anywhere in the manual about OAL for any bullet weight. My first question is why would they not include that info? It seems to me that it would be critical information because seating depth affects (or is it effects?) pressure.

So I looked in my Speer manual (number 12) and it says the tested OAL for the 100 gr bullet I'm using is 1.050. But, none of the loads they listed use Red Dot powder. Should I just go ahead and use the 1.050 anyway?

On a side note I measured a factory loaded 115 gr JHP round (heavier that the bullets I'm using) and it measured 1.080.

February 27, 2013, 10:34 PM	#1
TheCarDoctor Junior Member Join Date: February 16, 2013 Posts: 10	9mm OAL Question First time poster, long time lurker. I've reloaded rifle for most of my life but I'm reloading 9mm for the first time and have a few questions. I'm using Red Dot powder and 100 gr Speer JHP bullets. My 1992 Hodgdon manual says that the starting charge for Red Dot with a 100 gr bullet is 4.6 gr and the max charge is 4.9 gr. However I can't find anywhere in the manual about OAL for any bullet weight. My first question is why would they not include that info? It seems to me that it would be critical information because seating depth affects (or is it effects?) pressure. So I looked in my Speer manual (number 12) and it says the tested OAL for the 100 gr bullet I'm using is 1.050. But, none of the loads they listed use Red Dot powder. Should I just go ahead and use the 1.050 anyway? On a side note I measured a factory loaded 115 gr JHP round (heavier that the bullets I'm using) and it measured 1.080.