Been watching the posts, interesting back and forth. After I finally figured out how to make my own 20VT brass, I had learned a lot, just by doing the annealing regularly, and neck turning, and using bushings, and so on. I do uniform the primer pockets as I use LC brass, and after I fire them I clean the pockets with the same K&M uniformer, as it's easiest.
I used to ultrasonic clean my brass after firing, pretty much any caliber, now I don't. I watched a video by Eric Cortina, where he figured out it was as waste of time, so now I just brush the neck interiors with a nylon brush. With the Vartarg brass, as it fireforms in the first firing, I don't bump, just pretty much neck size, and make sure the brass chambers fine, and load and shoot.
I don't crimp any of my varmint ammo (I don't shoot matches, just critters), though have a friend who read the Lee copy on their FCD and was convinced it was a necessary step on all his ammo from there-on-out.
I just try to have consistent neck tension. I used to only bushing size, but have decided now to bushing size down and use the expander to uniform the ID on the necks, as that makes any slight variation of neck thickness less relevant.
And on my newly formed 20VT and 17M4 brass I do coat the inside of the necks with Neolube #2 (graphite coating), as it makes the first bullet seating. and release. more consistent. I figure the carbon from fired brass (minus a light brushing) will be enough of a "lube" for the necks, and they do seat a LOT easier once fired.
