Spoke with my friend this morning... He had a KSA barrel chambered to 6.5 Grendel and nitrided before any rounds fired. Initial cleaning was difficult and he resorted to bore paste to get it nice and smooth. Has shot only two 5 shot fireforming groups that came in mid .3’s.
I have contacted Thermex to see if they have process to do “outside” only but have not yet had a reply.
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