by Hoot » Sat May 09, 2020 10:11 pm
FWIW, most commercial ammo is made with blended powders under as previously explained, laboratory conditions, with special pressure testing barrels. Most powders shipped in commercial ammo can not be purchased by consumers for reloading. The ammo manufacturers buy powders by the train car load based upon basic behavior. It gets "massaged" before being fit for ammo production. The stuff we get has to pass Litigation Attorney scrutiny. Even then, the same model powder will vary plus or minus a little, from one lot # to the next. Serious competition shooters who reload (not all do) buy large quantities of a single lot # when they find one that performs the way they want. Ditto on their brass, bullets and primers. For most, cost is not a concern. Us bottom feeders do as well as we can with what trickles down to our local reloading supplier. One of the most appealing aspects of the 450b is how forgiving it is of powder variations from one lot # to the next, Not nearly as fussy as 6 and 6.5mm competition calibers.
Hoot
In Theory, there is no difference between theory and practice. In Practice, there is.