Max loads?? 9mm

Onagoth

Onagoth

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So, I thought I had this figured out, but reading another thread brought up some concerns.

The load in question is 120 gr (actually 122 gr) plated AIM bullets - 9mm
W231
WSP

I noted that these plated bullets should be loaded between lead and jacketed, and I have come across some data, all suggesting different starting loads and different max loads.

My question is this, how important is the max load data. IIRC, I have read of some guys loading to max and beyond. It seems many different sources suggest different max loads, sooo, some starting loads may very well be beyond the max load listed for a different source....

I started my first few hundred loads at 3.8 grains, seated to 1.135". I don't really have any desire to push for max, just want to meet the min PF for IDPA, around 1030 ft/sec. I am a little concerned because I don't know if the charge to produce this PF will be beyond a max charge...

Does anyone have a load for these 122 gr, and also for the 124 gr (which will be my next batch purchase??) I don't have a chronograph, so if someone knows which charge meets the minimum PF, that would be great.

Thanks
 
You brought up a question that I also had a question on. I wanted to throw this in with your question to the masses. If you use load data for JACKETED 9mm 124 and instead left everything else the same except substituted in 9mm 124 PLATED, would the power factor go up or down compared to the origional load.

I hope this does not bother you adding to your question but I think we are both wondering about some of the same issues.
 
sunray said:
Plated bullets get loaded with cast bullet data. Loading beyond max for either is unsafe.
Click to expand...

That kind of concerns me, because the minimum for a 124 grain FMJ bullet is in excess of a 124 grain lead bullet. I think I am safe at 3.8 grains, but its above minimum I think for 124
 
bizman89 said:
You brought up a question that I also had a question on. I wanted to throw this in with your question to the masses. If you use load data for JACKETED 9mm 124 and instead left everything else the same except substituted in 9mm 124 PLATED, would the power factor go up or down compared to the origional load.

I hope this does not bother you adding to your question but I think we are both wondering about some of the same issues.
Click to expand...

I think it would go up because if plated bullets are like lead, they require relatively smaller charges to produce the same power factor. Someone correct me if I'm wrong
 
"...WSP..." WSF perhaps?
"...minimum for..." It would be. FMJ's can be driven faster than cast bullets. Driving a cast bullet at jacketed velocities causes leading.
Two tenths grains of powder less won't matter much. Neither will a few grains +/- of weight.
Hodgdon gives 4.0 as the start load for a 124 lead bullet with WSF and 4.7 for a 124 gr FMJ.
Using Win 231 with a cast 125 grain bullet, they show 3.9 as the starting load.
 
sunray said:
"...WSP..." WSF perhaps?
"...minimum for..." It would be. FMJ's can be driven faster than cast bullets. Driving a cast bullet at jacketed velocities causes leading.
Two tenths grains of powder less won't matter much. Neither will a few grains +/- of weight.
Hodgdon gives 4.0 as the start load for a 124 lead bullet with WSF and 4.7 for a 124 gr FMJ.
Using Win 231 with a cast 125 grain bullet, they show 3.9 as the starting load.
Click to expand...

WSP = winchester small primer, I know, its not totally relevant to the conversation. Winchester lists the starting W231 load for 124 gr lead round nose as being 3.3 with a max of 4.0. Partly why I posted because everyone's data is so inconsistent :confused:
 
i just picked up a few aim 124 grn bullets too. starting up a load

4.0 grains of wst. from what iv read 4 grns will be a powder puff load, and i should end up around 4.2 grains.

a chronograph would be great.
 
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