# Mixing 2 tins of H 1000 together ?? Can it hurt ?

1. ### Down Under HunterWell-Known Member

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Hello all !

I was just interested to know if you had 2 separate tins of half full h1000 and stuck them together would you notice all velocity changes ?

Cheers

DUH

2. ### gamedogWell-Known Member

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Make up a few rounds a let us know
Heck , a guy may get more consistant results compared to changing from lot to lot.

3. ### specweldtomWell-Known Member

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DUH, I routinely take the last of a can of powder and mix it in with a new can of the same type. Never noticed a change in performance any worse than changing lot numbers.

Good hunting, Tom

4. ### goodgrouperWell-Known Member

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We've had this thread get pretty fired up before in the past so let me just say that the math involved in this shows the answer. You'll get the idea if you consider the fact that the odds of getting two lots of powder to have the same identical burn rate aren't very good. Then adding the two together are going to make it slower overall or faster overall. Then the odds of getting a mix of 50/50 in any given charge in a non-fluid solution and oh my, my calculator won't go to that many digits!! Let's see, the odds of winning the Idaho state lottery are................

5. ### Down Under HunterWell-Known Member

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GG,

I toatlly agree with your thinking.

I was not sure if certain powders were more prone to this over the next ?

Is the H1000 generally consistant from batch to batch ?

Thanks all

DUH

6. ### .280RemWell-Known Member

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Last edited: Jun 13, 2008
7. ### .280RemWell-Known Member

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I wouldn't hesitate to mix the last few grains of one in to a nearly full tin of another. But I agree with the above on mixing 50/50. Maybe it wouldn't hurt, but I personally just wouldn't want to chance it. If you had one of one very fast lot, and another of a very slow lot...it could IMO, create a problem.

8. ### MagManWell-Known Member

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I'll do my best to sum it up......some mix cans of the same powder with different lot numbers and some don't.

I'm a can mixer.

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10. ### goodgrouperWell-Known Member

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I have just recently bought three different lots of H1000 and two of them produced very similar speeds with same charges but the third was off nearly 90 fps! And the two that were pretty close in speed actually had very different pressure curves. The first lot would produce ejector marks on the cases at mid level pressures and the other lot didn't.

And H1000 is one of the better ones for lot to lot consistency. Imagine what happens when you try this with something like RL25!

I suppose if you're just loading ammo for the sake of saving money over factory ammo, mixing lots wouldn't be dangerous or a terribly bad idea. But if precision ammo is your "aim", you're better off to just forget about the crumbs and move onto the next cookie.

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I use a lot of H1000 and have had pretty good lot to lot variations but I also buy double pack 8 lbs cans together so I don't change lots that often. Since you have setteled on H1000 I would get a stock of it in the same lot or large containers and eliminate the posibility of a problem.

12. ### jmdenWell-Known Member

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"I suppose if you're just loading ammo for the sake of saving money over factory ammo, mixing lots wouldn't be dangerous or a terribly bad idea. But if precision ammo is your "aim", you're better off to just forget about the crumbs and move onto the next cookie."

Bingo...

13. ### phorwathWell-Known Member

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I just bought two one pound containers of IMR 7828 from Sportsman's Warehouse because I couldn't find any 8 lb kegs. I mixed the two 1 lb containers together hoping I'll at least get consistent performance from the two pounds of blended powder. I couldn't tell from looking at the two 1 lb containers if they were the same lot number or not. One 4 digit number matched, but the longer number above the 4 digit number didn't match. And there was no "Lot #" printed on the containers anywhere that I could find. I don't understand why Hodgdon (which now owns IMR) doesn't make it simple to locate and compare Lot numbers on the IMR powder containers. Anyhow, I'll post again if this mixed two-lb blend performs noticably differently than the prior batch of IMR 7828 I'd been using. I don't see how it could be too far off the norm of performance.

I don't get the post about mixing one lot with a lower burn speed with a lot at a higher burn speed compounding any problem. Mixing the two batches uniformly together should put you right in the middle of the two burn speeds to my way of thinking. Sounds like witchcraft folklore...

I don't normally mix, but a one lb container won't last very long and then I'd have been on to a new batch with a different lot #. I'll be buying an 8 lb keg when I can find one.

14. ### goodgrouperWell-Known Member

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But only if the mix is a perfect 50/50. We're talking about actually counting out individual kernels evenly from both lots to achieve this. I ain't gonna do it! That would be way more of a pain in the arse then just having to go buy a new lot and tweak it.

You will be in luck on those bottles of 7828 btw. The four digit number on the side of the label is the lot number so you have two cans of the same lot.