7mm dakota or 7lrm

[lboom]

I shoot a 7mm dakota necked down to 6.5 and I love it. The case is so good you will get manny many reloads at least 30 or more so the price of the brass is insignificant. Go with the longer barrel,maybe 28 or so. Mine is 30,bit too long for most gun cases but the velocitys are great,noise less. My 2 cents

[MontanaRifleman]

I just got some 300 Dakota Brass that I plan to neck down to 6.5 as well. The brass is made by Hornady and I was a little skeptical about ordering it but when it showed up I was very pleasantly surprised. Definitely quality brass, probably made to Dakota specs.. The 7 Dakota brass is made by Norma and should be at least as good, if not better.

[trueblue]

284 JAZZ, much better brass and top notch ballistics.
Give SSG a call.

[RH300UM]

+1 on trueblue

[NZ Longranger]

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.
Greg

[Ernie]

I forgot what the 284 Jazz was based off of.

[RH300UM]

I forgot what the 284 Jazz was based off of.


Ernie, It is based off the 338 Norma mag with a improved shoulder.