My summary was it was not anything I was likely to worry about. The .one or .two or grains migrating powder weren't likely to change the velocity in the shell plenty of to bother with. The info booklet wherein the mistake takes place could be the Shotshell Reloading Guidebook, Version https://trentonrtnjh.wikilowdown.com/5037803/a_simple_key_for_ramshot_competition_powder_unveiled