Not trying to start an argument, just saying there's more than one way to get there & HF Red will certainly do it. Also saying that coating 500 bullets in 15 seconds is pretty amazing & I'd guess that you would have to be very careful with those bullets while placing in the oven because the powder can't have much of a bond in 15 seconds. Again, doing them in the tumbler allows me to do other things while they are tumbling & the powder is pretty impacted into the bullets when they come out & you get a very nice, even coat after baking.
Three years ago in Arizona when I first started I did the shake & bake as you describe except that I used air soft pellets after about 6 months which did help. But I always had to shake for at least a minute (HF RED) but the results were great & we were shooting 2 USPSA matches a week with great (and clean) results.The better powders save time but don't produce any better results, none, at least not on target. I'm going to have to test your 15 second method, it seems a little out there for 500 bullets, but congratulations if it's working!
Dick
