The Inline Fabrication Sky Light is great and not too costly. It's the first thing I have found that really lets me see into cases and check powder level.
If Federal BR-2 primers will do the job for you and you are anywhere near Indianapolis, I've got your problem solved. I have 1900 of them. PM me if you're interested.
I gambled and bought a few thousand primers whose boxes had been water damaged. Normally, when I gamble I lose, but this time I won. Every blessed one of them worked just fine and I had saved a pretty fair chunk of change.
I went looking to acquire a P320 yesterday. My friendly local gun store had a selection of new upgraded and non upgraded 320s. I checked out a couple of samples of each and found the upgraded ones to definately have a nicer trigger. A 320C followed me home.
I still have my pocket slide rule if you need one. A pocket slide rule in a pocket protecter is the ultimate nerdy. I don't use any flgr's because I like the "mil spec" spring plugs that screw onto the spring and don't fly away.
Powdered graphite is sold in small plastic squeeze tubes at most hardware stores. It's used to lubricate locks and is inexpensive. I would imagine that auto parts stores would also have it.
I've been using the Pact (Pact.com) scale for the past 20 years with no problems. I also have the digital powder dispenser that works with the scale but don't use it since I gave up rifle shooting thanks to arthritis. I recommend both without hesitation.