i'm not buying the different powders thing.
having talked with hornady guys in the testing lab, when they relabel a package like this - they keep the recipe the same. why change a proven thing that works just for a wrapper on a box?
every single product in the black line already had functional versions of it in another line, with a different label on it.
if the powders were different, how the heck did they manage to get exactly the same balistic results from them?
this is from the 250 ftx black
https://www.hornady.com/ammunition/rifl ... x-black#!/this is from custom - although the barrel length info is suspect - this is a common typo issue on their new website, and i think 24" is the default value for that field in the database and i've caught it on several other loads (300blk -
screenshot) that they've never published 24" data for.
https://www.hornady.com/ammunition/rifl ... -gr-ftx#!/if you look at the 223 75gr bthp, same thing - although with the match box instead of the custom
match
https://www.hornady.com/ammunition/rifl ... p-match#!/black
https://www.hornady.com/ammunition/rifl ... h-black#!/i could have copy/pasted those data into the charts.
the lot numbers between the black and the custom will necessarily be different, but the 450 bushmaster was origionally designed as an AR15 caliber. they already had a powder that was reliable, produced the proper ammount of gas volume to cycle an ar, was dependable (consistant), gave them the velocity they were looking for at the pressure they were looking for. why fix what aint broken?
the fact that different lots of ammo have different levels of consistency or are just a little more/less consistent than the last is no shock. like hoot said, i'm comfortable that its more about how fast the presses were running and calibrated that day/lot, etc.