Updated data with BP1044 wad.

[Dakota Jeff]

Hello Pete, for these examples the nitro cards were placed over the powder,and under the SP10 and BP1044 wads as a comparison.The BP1044 wads are a little smaller in diameter than the SP10 wads and can possibly lead to powder migration.With these proven loads it takes powder migration OUT of the equation completely.Hope this answers your question.Good hunting and Merry Christmas,Jeff.

[J.B. Books]

Originally Posted by Jeff Sweeter

Hello Pete, for these examples the nitro cards were placed over the powder,and under the SP10 and BP1044 wads as a comparison.The BP1044 wads are a little smaller in diameter than the SP10 wads and can possibly lead to powder migration.With these proven loads it takes powder migration OUT of the equation completely.Hope this answers your question.Good hunting and Merry Christmas,Jeff.

Thanks for the info. I read on a FB reloading page a guy claimed he stopped the powder migration by placing an oversize piece of paper towel under the 1044 wad. I have never tried it myself but I know sometimes a fix can be more simple than I realize.