It all changes with the lot numbers of the factory powders and factory loads.
They stay pretty consistent for the most part, but there have been occasions when the same powder does not perform at the same level even though it has the same name. They formulate those powders in batches giving them lot numbers so you know which batch you're using, and then you have inconsistencies in the factory loading process that rarely has issues, but there have been recalls of bad ammo.
They stay pretty consistent for the most part, but there have been occasions when the same powder does not perform at the same level even though it has the same name. They formulate those powders in batches giving them lot numbers so you know which batch you're using, and then you have inconsistencies in the factory loading process that rarely has issues, but there have been recalls of bad ammo.