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It’s like a Dodge diesel, ain’t the fastest, aint the sexiest, but it gets you there.

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Originally Posted by hanco
The boys I hunt with call the 4350’s an old man’s powder.

How appropriate as I hunt with old man calibers. I have no need for a 300 super mag when I have a 300 Savage and a 300 H&H. One of my favorites is a 7X57

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Originally Posted by hanco
The boys I hunt with call the 4350’s an old man’s powder.


Originally Posted by SheriffJoe
Both are out-of-stock!


There must be more than old men buying this powder if it's sold out.

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Originally Posted by hanco
The boys I hunt with call the 4350’s an old man’s powder.



I'm GLAD...

They will not be competing for MY powder !

I don't use it in everything but it will work it A LOTTA things!

Jerry


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In my rifles with 7 mag.,25-06 and .270 The IMR4350 and IMR4831 were slightly less accurate than H4350 and H4831.

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Originally Posted by StrayDog
In my rifles with 7 mag.,25-06 and .270 The IMR4350 and IMR4831 were slightly less accurate than H4350 and H4831.



I have a couple of pounds of H 4350. You are making me really want to try it!

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Originally Posted by StrayDog
In my rifles with 7 mag.,25-06 and .270 The IMR4350 and IMR4831 were slightly less accurate than H4350 and H4831.

I guess having big jugs of both signifies a "real old man"... wink

Get it when you can, load up when you can.

Powder has a really long shelf life. I have vintage H-110 and H-4831 that are 50-60 yrs. old, still shoot like fresh powder. But ya gotta store'em right.

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Originally Posted by Mule Deer
Butch,

Along with that Craigster posted, my understanding is that IMR4350 never was a military powder. It was introduced in 1940, and was partly developed for use in the .300 H&H, which Winchester had chambered in the Model 70 a few years earlier.

Hodgdon sold some of what they eventually called H4831 as "4350 data" powder very early on, because the powder could be safely used with IMR4350 handloading data, since H4831 was a little slower-burning.




John. ! just got back to this thread. I double checked the jug. It is marked Surplus military IMR4895. Grandson is coming over to load some for his M1 Tanker Garand. I will not use it at this time.
Sorry for the confusion.

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Originally Posted by OldmanoftheSea
Originally Posted by mathman
Originally Posted by OldmanoftheSea
John,
Do you have a "feel" for the relative volume or "packing" of the three 4350s?

Just curious if the key might be on the "the amount of powder that will burn" as controlled by the available oxygen...


Smokeless powder carries its own oxygen.


Enough for complete consumption Mathman?
I dont know the formulas off hand and it's been a while since I played with stochiomitry.
Following up on bits and pieces from another thread

Look at the size of your case, any case. Even a 105 Howitzer shell isn't big enough to hold enough oxygen to burn all that powder. Aslo, what little bit of Oxygen is in that case would be consumed probably by the primer. But neither the prmer nor the powder rely on outside sources of oxygen to burn. All the oxygen any smokeless powder needs to burn resides within it's chemical compound. It's like Rocket Fuel. OH YEAH it IS Rocket Fuel!


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As far as comparing the 4350s, I've never had that experience but I have with the 4831s. They are very different. Max load of IMR-4831 in my .270 Win.= 57grains. Actually that's the max in my old Speer No. Nine manual. But in my rifle I'm getting into higher than desired pressures of anything over 56.7. That manual states that when you get within a half grain of any max load you need to slow increases of propellant to 1/10th of a grain. I know that sounds anal but if I would have followed that advice I wouldn't have had a sticky bolt and flattened primer, which was what caused me to drop my load down and work slowly up and 56.7 was the magic point. And that all brings up something else that's mentioned on here. A Chronograph is a great tool. If you use it right it can keep you out of trouble. Now we all see people that post unbelieveable Velocities from time. I've posted a few. But when working a load up, if you see a questionably high velocity it should give you cause to check things out. I've had loads that were on the high side that were safe. But like when I was working my .270 load up almost 40 years ago, if I'd had a chrono I would have something that would have told me I was crossing the line. Now my my book says the max velocity for a load is 3000 FPS and my load is over 100 FPS above that, I'm going to stop increases until I conform it's not causing the case head to expand. Usually when that happens I call a load good. Also, if the velocity is swinging over 30 FPS from shot to shot I call a halt to increases. Then I'm backing off a tenth of a grain until it calms down to a dull roar. I'm no ballistician but I've learned enough to be cautious enough to keep from blowing my face off.

Last edited by Filaman; 09/27/20.

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