It has finally arrived today.....very long story of a difficult seller. Well most of it arrived. No bolt, forgot to ship it ??? and according to USPS data it should arrive on Monday.

Anyway, first glance, I like it. Bore looks good enough, overall condition is good enough.....
Second first glance, the "cast" supplied is wax, not so very conducive to best measuring so it will get some cerasafe. Looking over these supplied casts and spent cases, I can say that I think it is a .318" groove and I can say that I think it is NOT a 8x51mm. It is not a 8x57 either. The cast shows a case longer than a 51mm, the fired case reveals this as well, but is shorter than a 8x57. Future tests will tell, but am suspecting a 8x54. If so that will call for a 6.5x55 donor case as opposed to a .308 size