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Bone Head Mistake

180grains/3500grains x100= 5.14%
(dumped) / (1/2 lb)

180/3=60 grains per round.
60x.0514=3.08 grains/round

That's how you figure it in case you didn't know.

You make the call.
 
Last edited:
I keep an 1lb container for "trash powder" for anything spilled on the bench or for de-milling rounds so that I do the mix powders. If I intended on reusing powder from de-mill, which is rare, I use a small Rubbermaid container.

Lesson learned, change your process and don't do it twice.

As far as using mixed powder, I wouldn't, but to each their own.
 
jstanton said:
I was pulling some bullets that I loaded up for a 7mm Rem Mag that I decided to do something different with instead of shooting them. My normal load is with H1000 but I forgotten I had loaded up some rounds with H4831SC to experiment with. I had 10 of these left that I was pulling the bullets from. Without paying attention I dumped three of them, about 180 grains of H4831SC, into an open can of H1000 that was about half full. Did I just ruin the rest of the H1000 powder?
Click to expand...
On the burn rate chart H4831SC is slower burning that H1000, which theoretically should be safe, depending on how much of the H1000 remained in the can. Personally, I would add some motor oil to the bottle of H1000 shake it up, Then I would take it outside pour it out of the can then burn it and the can with the lid off, or better yet cutting the can open while chastising myself for being such a dummy. I would then praise myself for doing things safely and not taking the chance of harming an expensive rifle, or more importantly, myself or anybody standing nearby. Better to be safe than sorry. ;)
 
Teri Anne said:
On the burn rate chart H4831SC is slower burning that H1000, which theoretically should be safe, depending on how much of the H1000 remained in the can. Personally, I would add some motor oil to the bottle of H1000 shake it up, Then I would take it outside pour it out of the can then burn it and the can with the lid off, or better yet cutting the can open while chastising myself for being such a dummy. I would then praise myself for doing things safely and not taking the chance of harming an expensive rifle, or more importantly, myself or anybody standing nearby. Better to be safe than sorry. ;)
Click to expand...
I'm sorry but I must disagree with this statement that H4831 is slower than H1000 at least on the powder burn rate chart that I have .Information give on this site is taken as gospel to some . That can lead new loaders down the wrong path .
 

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For a 1/2 lb of H1000, I'd probably just pitch it. Plenty of H1000 sitting in my local Scheels shelves at the moment.

I made this mistake once too when forming cases for my 22-250 AI. My normal powder is RL-23, but used up the last of my RL-15 for fireforming. I had 4 cases fail to fire in the cold, so pulled them and dumped the powder (37 gr each) into my very full 8# RL-23 jug. Realized my mistake when I put the powder back on the shelf.

I felt sick about it for a while, but when I ran the math, the percentage was super low… I've been using it up and haven't had any issues.

Again, with 1/2 lb if H1000 - I'd chalk it up to a lesson learned and dump it.
 
Teri Anne said:
On the burn rate chart H4831SC is slower burning that H1000
Click to expand...
H4831SC is faster burning.

#137 H4831/H4831SC
#152 H1000

I would look at what charge weights are for each of the powders for a particular cartridge/bullet weight, and load accordingly in the safe range where they overlap since you have about a 20 to 1 ratio of H1000 to H4831SC

Take for instance, .280AI w. 160 NAB.
H1000 57.3 to 61.0gr
H4831 54.0 to 57.5
Try 57.4gr

270 Win w. 140gr
H1000 58.0 to 62.0
H4831 54.0 to 58.0
Try 58.0

6.5-.284 Norma w. 140gr
H1000 49.0 to 53.5
H4831 45.0 to 49.5
Try 49.0
 
Sdvldog1371 said:
I keep an 1lb container for "trash powder" for anything spilled on the bench or for de-milling rounds so that I do the mix powders. If I intended on reusing powder from de-mill, which is rare, I use a small Rubbermaid container.

Lesson learned, change your process and don't do it twice.

As far as using mixed powder, I wouldn't, but to each their own.
Click to expand...
This is supposed to be saved for medicinal purposes for the future 😁
 

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