9mm theorycrafting

[Kairo]

So I have H110 for the 38 spl and 357 magnum. I am looking at using this in the 9mm. There is a load data for 124gr using H110. I also noticed that 9mm can use magnum primers but with a reduced load. I am planning on using 115gr or even 90gr. This is also going into a semiautomatic pistol with a 4.4in bbl... This is absolutely against conventional wisdom, thus this is theorycrafting...

I know H110 is a slow burning powder, slower than like hs-6. The problem is lighter bullets will cause a lot of unburnt powder. I want to counteract this with the magnum primers and just run a lower charge than maximum safety.

Does anyone know any project that involves this? I am just curious if there is anyone that made attempts of this.

[scotty99]

H110 is way slow for 9mm. I seriously doubt you will get enough in the case to generate enough energy to cycle a semi auto. In 38sp even 9grs is under 800fps, and you'll be lucky to get 6grs in a 9mm case. If you compress the load, together with a magnum primer you could be in for a very exciting day.

9mm is a high pressure cartridge with very little case capacity, and often fired in guns with at least partially unsupported chambers. It is a poor choice to be doing this type of experimenting with. If your goal is a soft shooting load you need to go the other way - a heavy bullet with a fast powder.


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[JMP]

Put in a magnum rifle primer, drill the flash hole wider, and fill it to the brim. That should get the bullet through the end of your barrel without a squib. Otherwise, look for a faster propellant.

[Fordtrucks]

U need the upside down smilie, JMP.
Or else ur liable to get someone hurt.

Never know how the other person is likely to take it.
He did post the original question...

[357magnum]

H110 powder in a 9mm, NOT a good idea.

[ironhorse1]

Well the OP may not be wrong. H110 should work in the 9MM.

FWIW I had some 100 grain .32 caliber JHP bullets that I was getting ready to load in the .32 SWL.

Speer #14 listed a load of H110 of 6.3- 7.0 grains without a magnum primer.

So just because I could I loaded several expecting a mighty H110 flash.

Nothing spectacular happened and the load worked as intended.

I need to see some 9MM H110 data to compare but if it worked in the .32 SWL then it should work in other small cases.

irh

[ironhorse1]

Speer #8 H110 loads

It looks as if it has already been done, without a problem.

Speer#8 that infamously acclaimed source of hot load data has loads listed.

With a 125 grain Speer soft point They show:

10.9 grains=1140 fps
10.0 grains=1043 fps
9.0 grains=924 fps

There is no notation of using a magnum primer probably because the case and the charge are both small enough for efficient ignition with a standard primer.

There you go asked an answered. Thanks for reminding me to look at older data.

irh

[Carcassonne]

The only way you could use it in a 9mm is if you had a 16" barrel and really compressed the powder.


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[CGT80]

H110 does not like to be downloaded or to have extra air space. Another member, who I think belongs to calguns and castboolits, uses 110/296 for lighter loads with heavy cast boolits in the 460 or 500 mag, but seats deep so that the air space is still similar to a full power load. I only use w296/110 for two loads and they use 43 and 46 grains IIRC for a 300 or 240 grain bullet in the 460.

I don't see what the purpose of trying that powder in 9mm is.

Open guns use slower powder and I think one of them for 9mm is win supercomp. I use hp38 for my dad's open 9mm, but it is off the charts, but verified to be OK to run by our gunsmith. He tried a few in my 9mm AR, 16", and they ran fine, but I prefer my lighter load (factory equivalent or just below) because follow ups are faster due to less recoil and it is safer.

It seems like 110 for a 9mm is kind of like trying to use 50bmg powder in a 30 cal rifle......................it might get the bullet out of the barrel but it probably won't be good for much.

Let us know if we are wrong, or how it all turns out, but please be careful.

[ironhorse1]

Really? Why?

I don't know why there is so much FUD about H110 not being good in the 9MM in this thread.

There is data and the velocities listed seem to be what I would expect for a case full of powder.

I took a 9MM case and filled it with the maximum 10.9 grain load listed in the Speer manual.

The case was filled up to below the top and it certainly would be a slightly compressed load.

That to me sounds ideal for a powder that doesn't download well.

I would expect a lot of muzzle flash in a four, five or six inch barrel.

If one had a carbine the H110 load would increase the velocity beyond what would be reached with the medium pistol powders.

I'll put this test on my to do list and report back my observations on accuracy and function.

Maybe I need a 9MM carbine.

irh

[CGT80]

I don't know why there is so much FUD about H110 not being good in the 9MM in this thread.

There is data and the velocities listed seem to be what I would expect for a case full of powder.

I took a 9MM case and filled it with the maximum 10.9 grain load listed in the Speer manual.

The case was filled up to below the top and it certainly would be a slightly compressed load.

That to me sounds ideal for a powder that doesn't download well.

I would expect a lot of muzzle flash in a four, five or six inch barrel.

If one had a carbine the H110 load would increase the velocity beyond what would be reached with the medium pistol powders.

I'll put this test on my to do list and report back my observations on accuracy and function.

Maybe I need a 9MM carbine.

irh

Yes you do. Build an 80% lower and test those h110 loads. I just put a nice ambi safety on mine to go with the featureless hammerhead grip. Hopefully I will get to run it in a match on Sat.

9mm might work fine with h110 if there is load data, but I have not heard of anyone doing it. With the powder shortage we had, it seems like people would have possibly tried it and posted. There might be a reason it doesn't seem popular......................or maybe we have all been in the dark and don't know what we are missing.

[noylj]

Would not even consider a .38 Spl and H110. It needs PRESSURE to burn. For magnum loads, they recommend not reducing the MAX more than about 2% for a start load. .38 Spl won't even get up the pressure of a .357 Mag start load. If it doesn't burn well, you can end up with a partially melted wad of powder stuck in the barrel.
Next, if your manual shows 9X19 loads for 296/H110 and 124gn bullets (all I've seen is 125gn Speer SP; 9.0gn start and 10.9gn Max) and NOT for lighter bullets, then you can safely assume they tried and it didn't work.

[Fishslayer]

Well now y'all have me curious. I have a box of 147gr Bear Creeks sittin' under the bench & about a boatload of H110 powder...

[mjmagee67]

If all you have is a hammer everything starts looking like a nail. Use the right tool for the job. H110 is a slow high case volume powder, 357 mag or 44 mag type cartridges. 9mm is a low volume cartridge that like faster powder.

[Divernhunter]

Using H-110 powder in a 9mm is much like using a 30lb sledge hammer to set finishing nails. You could do it but there are much better choices.

Just because you can does not mean you should.