Re: 7mm dakota or 7lrm
Because of the Dakota brass, dies and bolt face issues, we've built a 2.5" 7mm RUM we call the 7mm Stumpy. Its basically the same capacity as the 7mm Dakota. We just stopped our short throat 7mm RUM reamer short at 2.5", and cut a set of Redding Comp RUM dies off at 2.5". Its a really good rebarrel option for Tikka T3's, fits their action and mags just nice.
We do a 2.75" long 100 thou short version of the RUM as well, which we call the 7mm SRUM (short RUM) that fits a Remington 700 long action mag box perfectly, without having to lengthen it. It gets rid of the big jump to the lands you get with the factory spec full length RUM chambering.
Just a couple of the 7mm's we do for specific rifle brands and mag lengths.