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Ammo and Reloading Factory Ammunition, Reloading, Components, Load Data and more.

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  #1  
Old 07-09-2017, 9:41 AM
boyguan boyguan is offline
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Default What charge for pistols?

Just loaded up my first 9mm with 115 grn fmj and 231

My book states starting 4.4 and max of 4.9 for lrn.

Edit@@@ turns out I loaded for lrn and not the spr gdhp which is a 4.6-5.1 max which I believe I'm suppose to be in. Should I worry since it's a tad light? Why don't books give you these numbers as I assume fmj is so common also loaded oal to 1.16 which is what factory is

I did 10 rounds of 4.4, 4.6, 4.8

What's the benefit of more powder and what should I look for?

Last edited by boyguan; 07-09-2017 at 11:43 PM..
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  #2  
Old 07-09-2017, 11:06 AM
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dkonrai dkonrai is offline
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I load to what my firearm likes. Your doing it correct with ladder testing. Usually it somewhere in the middle. Ymmv

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Old 07-09-2017, 11:08 AM
thx1138x1 thx1138x1 is offline
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The benefit?None,if your gun cycles reliably at the min. I would stay with that.
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Old 07-09-2017, 11:23 AM
stilly stilly is offline
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More power, pressure, velocity usually.

There is a trade-off though, at what point do those three things start to give you less and kill your accuracy more?

Load how you want, but killin paper is killin paper of course it never hurts to have a stout load around to blast something other than paper...
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Old 07-09-2017, 12:57 PM
Christopher761 Christopher761 is offline
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Your method is correct. Just see what works best for you.

When I was loading some 45 with 800X (back when that was all that was available), I found out that the lower charges failed to burn all of the powder. The shell casing would bounce off the wall at the range, and then spray unburnt powder all over my face and arm. Once I filled to the top of the range, it burned all of the powder.

If you get too much powder, you may cause overpressure. Look at the spent primers to see how they normally look. If they are overpressured, then you will see that they are flattened against the bolt face.

You should also check accuracy from bench rest shooting. Some loads will be all over the place. Some will be more accurate. It just depends.

You will get different results from lead as compared to plated or compared to FMJ. Or you could join up with Stilly, and learn how to powder coat.

So have fun.
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Old 07-09-2017, 12:58 PM
Christopher761 Christopher761 is offline
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Oh, and Lee's reloading manual has a lot of great information in it.
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Old 07-09-2017, 5:59 PM
tonyjr tonyjr is offline
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I prefer the lightest load that will burn all the powder and cycle .
Revolvers are different - they only need to get bullet out of barrel .
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Old 07-09-2017, 6:36 PM
rdtompki rdtompki is offline
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Just make sure that the bullet your loading is the same bullet referenced in the load table. There's a pretty big difference in load range between FMJ and LRN.
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Old 07-09-2017, 11:00 PM
boyguan boyguan is offline
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Sometimes I'm confused about that. Isn't 115 grm the same if it's lead or not especially if you load to max length
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Old 07-09-2017, 11:39 PM
stilly stilly is offline
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Quote:
Originally Posted by boyguan View Post
Sometimes I'm confused about that. Isn't 115 grm the same if it's lead or not especially if you load to max length

LoL...

No such thing as max length really. Max length is the pill falling out of the shell...

Different frictions for different materials and subs so thus the various materials tend to hold on tighter or not at all. Same projectile in lead vs j-word means different charge. Same projectile in resin or something else is different charge also to get them to the same velocities.

Also, when you hit the Minimum length of a round using a certain powder vs another powder and also while using a certain projectile, it starts to increase pressure a lot faster then when you make them longer. Longer rounds = less pressure, shorter rounds = more pressure, general rule of thumb. You should have a chrono to see it though. Max length is whatever the magazine will hold and feed. Max length for the Deagle in .44 mag is 1.600" and beyond that you will start to have mag feeding issues. You can go way shorter though before you start to ALSO experience feeding issues. But you will most likely have a pressure spike and be in unsafe territory for COAL by the time you get there.
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Old 07-16-2017, 7:42 PM
otteray otteray is offline
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HP-38 = W231, or so I've always been told, mighty darn close.
Call Hodgdon and ask if they are okay with your load.
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Old 07-16-2017, 8:03 PM
boyguan boyguan is offline
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I shot the load this weekend.

Coal 1.14
4.3 weak
4.5 pretty accurate
4.7 no difference
Gonna aim for 4.5 with the powder measurer and call it good
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