Neck Concentricity

[MJF]

I was thinking about something like the Bersin tool for checking and straightening case necks. Normally I do not even check this, but now having a gun built for 1,000yd shooting, I want the most accurate ammo I can make. I was thinking a RCBS case master and the Bersin tool, or the H&H concentricity Gage. The H&H Gage will measure neck thickness and concentricity and straighten the round. Has anyone seen this? I found them in the latest Varmint Hunter. It looks like a high quality piece that does everything for $139.00. And works with calibers from 22ppc to 375 H&H.