I'll never understand folks who bead-blast and then immediately blue. I've run several tests on barrel sections using extra-fine beads, but have found there's still a slight "peening" texture on the metal.

I've found that the texture is about the same as 180 grit or so, requiring further sanding. I can't really see the benefit as far as labor or time savings over regular hand methods.

I am going to experiment with it on actions eventually.

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.