Can anybody tell me if mixing two different lots of the same powder is a bad, good or indifferent thing? I had two different lots of H1000 and I mixed them together. I noticed after I had mixed them that the kernels of one lot was darker than the other. Is this really bad or does it make a difference? Thanks,
Troy

Well, in theory it shouldn't make a difference. All these years we have been told that powder manufacturers and sellers blended their powders to keep the reloading data pretty much on the published mark.

However, I think that I have mixed little bits when switching to a new can, just so as to even out any differences, if there were any. Haven't had any trouble yet.

Unless you can mix big batches of powder, you might need to adjust your loading data sometime when switching to a new lot. This sometimes happens and sometimes not. Personally, if a load is so fussy as to need lot-to-lot adjustment, I would consider buying a big batch of powder of one lot or enuff of other lots that I could get a big lot mixed and keep the same loading data for awhile. If you do that, you should assign your own new lot number to the mix and record just what lots went into it, just in case there is a recall of some powder.

I do this on purpose to generate one bigger homogenous lot of powder if I can't get the quantity I want in the same lot number.

Just be sure to thoroughly mix it before dividing it back up into the smaller containers.

As with any new lot of powder you need to do at least a quick load development to be safe. Even reputable manufacturers make a "hot lot" every now and then.