Thread: Dakota calibres

Originally Posted by 30.06king

If you're looking, which calibre ? I may know of some but would have to check calibre / availability.

Probably 7mm but more of a general question as to availability and cost. Sounds like not great on either score.

I have a 330 Dakota built on a Ruger M77 ex 338 Win Mag. Back in the day I sent the whole rifle to a Gunsmith in the USA. He rebarreled it with a Lilja barrel and sent it back to me. No paperwork or permits required. Ah those were the days. It realistically doesn't do anything the good old 338 Win Mag couldn't. I have a mix of Dakota brass and reformed RWS .404 brass.

Originally Posted by chainsaw

Probably 7mm but more of a general question as to availability and cost. Sounds like not great on either score.

@chainsaw I asked about the brass. It was 300 Dakota. But, already spoken for sorry.

Thanks, no worries.

I had a 300 Dakota built on a. Weatherby action. With rl33 and 250gr atips in an 8t shilen I was at 2930fps. Was a super accurate rifle. Very cool cartridge in my opinion. Would have been a lot more popular if it ran a standard magnum bolt face.


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Originally Posted by 30.06king

If Dakota brass is based on 404 Jeffery dimensions they probably fit a Tikka magnum bolt face. What makes ms think so is I have a 300 Blaser and the case is suppisedly based on 404 Jeffery dimensions. The Blaser case fits an unmodified Tikka magnum bolt face. I used the Tikka magnum actio for my rifle.

I looked up the Blaser 300 Magnum to find that it has a 0.535 inch case head diameter. The 30R Blaser cartridge has a case head diameter of 0.531 inches (per Wikipedia diagram: 13.5mm, divide by 25.4 mm.in to get 0.531 inch).

The 404 Jeffrey has a case head diameter of 0.543 inch (Wikipedia), which is close to the 0.545 inch case head diameter of the main Dakota series cartridges (Terminal Ballistics).

I have a 330 Dakota. A .340 Weatherby case (with standard magnum case head diameter of 0.532 inch [Terminal Ballistics]) is retained loosely by the bolt-face/extractor claw of my 330 Dakota. I can't state that the overlap of the extractor claw is enough to provide reliable extraction of case made for the Dakota from standard magnum brass. It looks like it might.

So far as I can find, only Dakota cases or .404 Jeffrey cases have an appropriate Dakota rim diameter. I've just fallen into 240 once fired 300 Dakota cases, which I plan to expand up to 0.338, so with my current supply of 127 330 Dakota cases (mostly new brass) my case supply problem is solved.

I have seen a custom case maker offering new Dakota brass for $6 each. These would presumably have the advantage of being properly headstamped. Also, Redding sells a $200 die set made to convert .404 Jeffrey cases into the 330 Dakota (instructions included), probably available for all the Dakota line. Of course these days, the 404 Jeffrey cases are also rare and expensive, though not nearly so bad as the Dakota.

The Parkwest Co. which now provides Dakota rifles has no cases or ammo available. They aren't optimistic about getting any, as makers require a prohibitive number in an order to cover tooling up. Hendershots offers some Dakota ammo, but it will be made from 300 Dakota cases, and so headstamped.

The Dakota rifles are fine examples of craftsmanship and aesthetic, worth having, keeping. I think a good gunsmith can alter the bolt face/extractor claw to properly fit a standard magnum case head. If that is done, then Dakota cases might be made from 338 Rem Ultra Mag cases, or possibly 375 Ruger (not sure about the Ruger, the case body is slightly larger that the Dakota's).

Rebate the brass rim a few thou to fit the std magnum boltface

Shooters been doing it for years

Doesn’t increase bolt thrust as the chamfer makes the brass face smaller than the total dia anyway

Saw a 7mm Dakota take out a trophy Fallow once, made my ears ring, shook the closer trees, created a minor earthquake and scared the f#%k out of every game animal between Cheviot and Kaikoura. The buck ran 80 yards and died, a 6.5 creedless would have done it better.

Originally Posted by 199p

Didn't they have some quirk like very short necks?

Hey nothing wrong with a short neck...

There is a few 7mm that were built in chch by a mate but the extreme price of the
Brass has put any new builds off last list price it was more then lapua factory 338 LM brass
When 338 was $5 each Dakota was $6-7 per case

I worked on a 7mm Dakota 6 months ago had to solder a bush into the bolt face and recut to suit
Standard magnum bolt face and ended up changing to 28 nosler

With bringing new line ups into precision hunter ammunition or
Bringing back old rounds like the weatherby it has made it harder to justify
$7 brass when of the shelf stuff does the same thing in a more universal way
If you get bored with the caliber