It always bears reminding, especially on forums in case someone later wanders by, if one is to do this make sure to update/strike-out/mark-over the lot # on the canister even if you're filling the same powder in an identical factory-marked container. Doesn't happen often, but powder recalls do occur.
(removing safety-fascist hat now
)
Few of us who purchase 8# kegs are buying it to compromise. I guarantee my 8 pounders of Varget, H4895, H335, and BL-C2 will be used in very accurate loads for the corresponding cartridges and bullet weights. As will the ones in W296. And yes, for .30-30 BL-C2 is on the slow side for that cartridge. Most experienced reloaders can read such comments in context, and Nelson is no neophyte.
Also, not everyone is trying to get loads that are under 1/2 MOA. If you are a hunter the availability, interchangeability, cost, and velocity of a powder's load may be more important as long as it gives acceptable accuracy for the ranges and game being hunted. It is a mistake to project one's own priorities onto others. I can easily get sub-MOA loads with several bullet weights in .223 with H335, BL-C2, H4895 and Varget so it does not pain me too much when I run low on BL-C2 and need to switch to one of the others until I can resupply. Likewise in .30-06 although I favor Varget, I also get MOA loads with H4895 and IMR4064 so I would not have a problem using any of them. Same for pistol. I have several good loads worked up for multiple powders in each cartridge so although I stock up on a few, I have cans of several others and at 1,500 loads per 1# can that goes a long way.
I was fortunate to plan ahead and stocked up on all of them prior to 2008 and 2012 so I can choose which 8# keg to use. A one pound can only loads 150 rounds of .30-06 at best, and that is only one or two range sessions so that would be a real hassle to buy in one pound cans if you do much shooting.
Even with hazmat fees a single 8# keg is 10% cheaper than eight 1# cans and takes up a LOT less space, and it is all one lot. If you buy 4 8# kegs and 5,000 primers the hazmat fee and shipping are negligible and you get much more like 20% savings. Supplies are sketchy, but I have bought powder in the last few months. If you can only buy 1# cans then that's your only option, but if 8# cans come up then it is cost effective to grab one or more if it meets your needs and you do anything more than a few rounds per range session.