Re: 6.5 Sin
7mm, my point is the dakota has a .545" case rim diameter and the RUM a .539 case rim diameter so to use the Dakota brass the bolt face probably will need to be opened up a little. I recomend using the RUM brass when Devin gets dies for it. Because the RUM is slightly larger just in front of the case rim a slight bulge will develop there when using Dakota brass. That plus the short neck is why I do not recomend the dakota brass as a permanent solution. That was and still is my only option for now. I wanted to get all the data I could as quick as I could. The performance is the same with either brass for collecting data. I hope Devin gets some dies out soon to remedy this.
Predictions are difficult, especially when they involve the future