Any one hear of this or use it?
I use a variety of his 10mm loads pretty often. I don't have experience with their other calibers, but Mike has good QC so I am sure its good stuff.
Have used gobs of his stuff, including cases of loaded-just-for-me custom ammo, in 10mm and 9X25D with zero problems.
If you have an older G20 (2nd Gen) or any 10mm with a loose-tolerance chamber, you may experience bulged cases. Then again, that's happened to me with Buffalo Bore and even Hornady 10mm.
I'm eager to try some of his centerfire stuff; my .35WAI needs a heavy, deep-penetrating load, I do not enjoy handloading, and the factory Remington JSPs ain't cutting it.