Mixing lots of powder to make your own “lot”?

[GoatPackr]

This is why I keep load develop records. If 75 grains gives me x fps and 76 gives me y and so on then when you get a new lot number you drop back a few and shoot. Compare that number with records and work back upto where your accuracy fps was at. It shouldn't take more than 3 or 4 shots if doing it right.
I've had lot # changes vary by 1 or more grains. No big deal.

Kris

 

[Vern400]

There is no problem mixing two batches of powder of the exact same type. If you're doing load development now go ahead and mix it and that will be your recipe until you're completely out.

The only cautions I can think of are
1. Make sure you label it properly and
2. I wouldn't do it if one of the batches was very old. Or if it's been stored in hot conditions. I have one batch of double base powder that I think has changed over time and maybe going bad. Blue Dot. I'd hate contaminate 4 lb of new powder with 1 lb of old crap that's questionable.

 

[mod7rem]

I remember reading in the past that even powder manufacturers blend from lot to lot. Always having a certain percentage of blend from previous lot to new lot.

 

[packer58]

I remember reading in the past that even powder manufacturers blend from lot to lot. Always having a certain percentage of blend from previous lot to new lot.

That actually makes a lot of sense, that would mostly eliminate any hard wall from lot to lot .....

 

[Godsdog]

I have Blended lots of the same powders when I get more than one jug of the same powder at the same time. When you get the same powder but there's years difference in the lots, I have found that a new "same" powder is not the same animal and it's best to use the old powder up in your load data and then start over with the new lot. I have seen a 2-grain difference in different lots of AA #9 loading it in the 22 Hornet and the 22 K-Hornets. 2 grains in a 22 Hornet is really critical. Maybe a person could "Luck-Out" with a blend, but you are changing the makeup of both powders in doing so and that might not matter and then again, it could raise hell with something!

 

[rayporter]

lots of us blend lots.
some blend powder. search accurate shooter and LT31.

 

[ZacSquatch]

Send it

 

[Jlee91w]

Blend away! especially if you just bought 5 lbs of different lots. Now you have 5lbs of your own lot. Anyone that says you would have 99 kernels of 1 lot and 1 of another needs fo learn how to mix. That would be the equivalent of saying all of your chocolate chips are in one scoop and the flour is in another for your chocolate chip cookies. Mix away!

 

[Unckebob]

It isn’t an unpredictable variable it’s incredibly predictable. I’ve had 4 lots of powder in 8# of H4350 and all 1500 rounds did exactly what I wanted. No extra trips to the range checking anything. 10 rounds to zero 1490 on target.
All I did was trim brass as it grew. Load and shoot. No muss no fuss


Sent from my iPhone using Tapatalk

As long as the shooter regularly checks for pressure signs (which I think most handloaders do out of habit), I don't see a problem.

 

[Rich M]

I just use em as packaged. Done w 1#, move to the new jug.

 

[shedhead]

Mix em, I use a 5 pound keg when it’s about half full I dump a new 1 pounder in it and give it a shake..


Sent from my iPhone using Tapatalk