The majority of our conversations revolved around the magical .5015 number, which he continually referenced as the max size for the .50, he did say they had gone as high as .5020 in the past, but definately anything higher than that was a no go. (I also thought the low end of the .52 was too low, but my concern was more with if I was over the high end of the .50.) I may could change to the MMP short blacks, and get the gun to shoot, but he seemed skeptical of the accuracy I would get if the barrel was truly oversized,and if they're willing to swap the barrels out, then I'd rather go that route, and hopefully keep shooting the same loads, bullets, sabots, in all 3 guns.