For years I have used several dry media vibrators and tumblers, and none of them have lasted, so I determined to make my own tumbler and try wet pin tumbling.
There are many people that use the Hornady Concentricity Tool. It is a good basic tool and has its strengths and weaknesses. Let's address several of those weaknesses with a few modifications.
Do not use high pressure techniques on low or medium pressure cartridges. That is easier said than done because most rifle components are meant for high pressure cartridges.
Magpul 10 Round AICS Magazine Problem.
I have observed the phenomenon over the years, after spending many hours perfecting a consistent load for a firearm, of what seemed to be random flyers from otherwise tight grouping ammunition. I have also noticed that having cartridges that exhibiting near zero runout, occasionally throwing flyers. What can the cause of this problem be?