[ARCHIVED THREAD] - New And Old IMR Powder

Posted: 4/15/2013 11:32:28 AM EDT

I have some old IMR 4895 powder in the Metal can
Is it ok to mix it with new 4895?

Posted: 4/15/2013 11:49:57 AM EDT

[#1]

It is usually poor practice to mix powders from different lots. Nothing wrong with putting your new powder in the old EMPTY metal can if you want though.

Posted: 4/15/2013 12:49:30 PM EDT

[#2]

Never mix powders. Each lot number is made using a slightly different blend of stuff to get the desired burn rate. They have the ability to do this at the factory, but not the end user.

Use the container until it is all gone, then switch to the newer container. When switching lots, it is a good idea to check your loads to ensure nothing has drastically changed.

Posted: 4/15/2013 12:54:31 PM EDT

[#3]

Never ever do this!!

I've done it. I wouldn't use it at max velocity. I mostly use it for cast in a rifle which isn't that hot of a load.

Posted: 4/15/2013 1:32:26 PM EDT

[#4]

If it's a dribble that won't come close to filling a case, then go ahead. Otherwise keep loading it until it's gone.

Posted: 4/15/2013 1:35:22 PM EDT

[#5]

I've done it.

Posted: 4/15/2013 1:41:04 PM EDT

[#6]

Quoted:

If it's a dribble that won't come close to filling a case, then go ahead. Otherwise keep loading it until it's gone.

Same here.

Posted: 4/15/2013 2:20:18 PM EDT

[#7]

I do, but only for small amounts left.

Posted: 4/15/2013 3:53:02 PM EDT

[#8]

I do it all the time as long as the powder is the same. All you are really doing is making your own lot. I couldn't find a keg of 4064 to save my life but I could find 1 lb cans. I mixed everyone, about six different lots to create my own "1" lot. I just used a chrony to work up my load like always. No problems at and it wasn't the first time I done it and won't be my last...

[ARCHIVED THREAD] - New And Old IMR Powder

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[ARCHIVED THREAD] - New And Old IMR Powder

[ARCHIVED THREAD] - New And Old IMR Powder