What is it and where is it? Nice picture of a 423 Dakota rifle in Africa, in their magazine, but no info on cartridge. What gives?

Champlin,
We have been wondering this for about a year.
This is obviously closely guarded proprietary information. Stay tuned for the next installment of the News From Sturgis.

I have not felt sneaky enough to do it, but sumbuddy suggested calling up Dave Kiff as the likely reamer maker and asking if he could supply some info:

Pacific Tool and Gauge: 541-826-5808

I have been playing around with necking up the .338 Lapua Magnum for years. If they do anything other than a straight neck-up of the .338 Lapua Magnum to .423 caliber ... well, it won't be pretty.

I am still sorting out all the details of the HA!/DOA proprietary line.

No secrets here. Public domain, free for the taking, these excellent ideas, and a bit of controversy with the short-necked .457 Lakota Boom Stick.

You know, even though they successfully Siouxed Custer, the Lakota got the short end of the stick: Crazy Horse stabbed in the back (due to politics), Badlands reservation, Wounded Knee, etc.

The short-necked .457 Lakota Boom Stick is a tribute to "endeavoring to persevere."

Hopefully a world class wind farm will arise in the Prairie Winds of the high plains badlands. I am contributing hot air in hopes of this.

Hau Cola! Behold the HA!/DOA Line (even us Indians go to Africa now and then):
.457 Lakota Boom Stick
.307 Lapua Chui
.337 Lapua Simba
.377 Lapua Nyati
.427 Lapua Kifaru
.457 Lapua Tembo
.470 Mbogo
.510 Tatanka


BTW,
I did make it to the Dallas Safari Club Convention briefly Friday and Saturday last.

I did stop by the Dakota booth, and nobody there at the time knew anything about the .423 Dakota. Not even a dummy round was to be found amongst all the other dummies standing around there.

Had I had even a glimpse of a dummy .423 Dakota Lapua, I would be able to tell you more, so well do I know the contours of the .338 Lapua Magnum.

And Craig Boddington, whose seminar on Leopard Hunting I attended, recommends the .30-06 with "deer bullets" for leopard.

Shades of the .307 Chui ...

Poor Craig's south paw must have been cramping from all the autographing going on. I must have peeved him a bit by nabbing him for a signing at a booth other than his own. But he didn't complain, just did it.

Ray and Pierre didn't seem to be getting much action on the floor there, and seemed to have that deer-in-the-headlights look about them.

Fiona Claire Capstick Pires was everywhere, shopping with Mr. Pires, and hawking "The Book."

Dave Watson was usually found near the snack bar. Getting pretty stocky. Doing an Elvis?

Johan Calitz is rather frail looking for such a "big man" of the industry. Hopefully well recovered from the buffalo stomping he took.

Yada yada yada ...

quote:

Originally posted by RIP:

.457 Lakota Boom Stick
.307 Lapua Chui
.337 Lapua Simba
.377 Lapua Nyati
.427 Lapua Kifaru
.457 Lapua Tembo
.470 Mbogo
.510 Tatanka

Please inform as to the status of rifles being built for these calibers, if you will kind sir! Dakota just sent me an ad posing as a hunting magazine, and it said something about the .423 Dakota. Seems like it killed a sable, an eland and 3 cape buffalo as of the time the article was written.

500grains,
We started reporting on loads for the .45 Lapua years ago, and pictures of the rifle were posted. It is now called the .457 Lapua Tembo: CZ 550 Mag/McGowen stainless 12" twist 22" barrel, giving 2400 fps with 500 grainers at modest pressure.

The .375 Lapua Nyati is the same as the German 9.5mm Tornado. Initial load workup to about 2725 fps with 300 grainers and 96 grains of H4831SC has been reported here: CZ 550 Mag/Dan Lilja stainless fluted 12" twist 26" barrel ... etc.

The HA!/DOA mechanical engineer/gunsmith is working on getting these prototypes ready for unveiling.

The .457 Lakota Boom Stick will be on a stainless Ruger M77 Mark II with 10" twist 22" barrel.

The .427 Lapua Kifaru is on a Dakota 76, with McGowen 10" twist stainless 24" barrel, a .423 Lapua the way Dakota should have done it.

.470 Mbogo is on a BBK-02 that you have ridiculed here before.

.307 Lapua Chui is a CZ 550 Mag, and is nothing more than a .300 Lapua Magnum with "special throating."

.337 Lapua Simba, on a CZ 550 Mag, is the .338 Lapua Magnum, again with "special throating."

.510 Tatanka is a .505 Gibbs necked up to .510 and the neck shortened by 0.14", a fitting rebarrel of the CZ 550 Magnum Safari Classic abortion.

I have really put out enough hot air for tonight, and I am sure many think I have wasted too much band width already.

HA!/DOA is a viable alternative for anyone.
It is a not-for-profit organization that fosters interest in interesting (accurate) rifles, suitable for all manner of big game hunting, and then some.

I will keep you apprised of further developments
as they unfold.

Obviously you have not paid much attention to all the hot air so far.

They are neat-0. But I am beginning to bore myself, tonight. Later.

quote:

The short-necked .457 Lakota Boom Stick is a tribute to "endeavoring to persevere."

the boom stick is great for someone who does not mind doing a little smithing.

i have a couple more wildcats up my sleve but they are not ready for unveiling yet (what a tease i am)

Boomer,
Thank you for the Technical Advising and Marketing hype so far, well worth your 1% cut of the action. We bad!

cant wait for the r+d on the boom stick...

do you think 2400 fps w/500 gr maxload is about right?

BS,
2200 to 2300 fps with 500 grainers would be the goal with the 3.34" .457 Lakota Boom Stick. Lott equivalent in a standard Mauser length with 22" barrel.

Using the monometal copper and brass bullets, the 450 grainers make good sense in the shorter action. We might get those up to 2400 fps in the .457 LBS with a 22" barrel.

Of course more is possible if loading like P.O. Ackley did the .475 A&M.

News Flash:

The .423 Dakota Lapua will be only 2.490" long of brass and have a 35 degree shoulder "hemi-angle" according to the grape vine.

Sounds like a worthy backup for the .457 Lakota Boom Stick (20 degree shoulder and 2.500").

Both will be about 2.5" in the case.

The .427 Lapua Kifaru is to be 2.700" with 20 degree shoulder, and fire the .423 bullets at lower pressures and faster velocity than the .423 Dakota Lapua.

Necking up and fireforming .423 Dakota Lapua to .457 Lakota Boom Stick would save some trimming.

interesting news on the 423...

i like the boom stick better

the b.s. pushing 2300 fps @ moderate preasure with 500 gr elephant slammers sounds good to me

Hey RIP,

What is the head diameter of the .423 Dakota-Lapua-Rua-Dua?

lawndart

Bro'dart,
It is the same as for the .338 Lapua Magnum, which is the same as for the .416 Rigby.

0.5878" for head and rim max CIP spec. 0.586" for real world brass by Lapua.

Sometimes you will see the .416 Rigby listed as 0.590" at rim and 0.589" at head.

If you get out your calipers and measure any Lapua or Norma brass for the .338 Lapua or .416 Rigby, the head and rim will be the same (0.586"), and so is the body taper up to the point where the .338 Lapua shoulder cuts in.

Likely Dakota has blown out the body taper of the .338 Lapua/.416 Rigby to create this brand new .423 Dakota Lapua with a 35 degree shoulder and 2.490" or 2.5" case length. If so, then necking it up to .475 would be an easy approach to a .470 Mbogo Short.

boom stick,
I like the .457 Lakota Boom Stick better too. Ditto the .427 Lapua Kifaru.

Dakota better be careful or they will have Rick Jamison all over their ass!

Well, the 300 WSM and .423 Dakota Lapua do share the same shoulder angle as the Jamison pet ...

I never could get interested in those itty-bitty WSM's, SAUM's and such.

Has Mr. Jamison hastened the demise of the Winchester M70? CZ's market share of the big bores didn't help, no doubt ...

The rifle on my shoulder below is a Pre-64 Winchester M70, .300 H&H action with .375 H&H rebarrel. 6.75 lbs bare/empty. On a kopje over looking Limpopo Country, RSA to the south and Botswana to the north: Salute!

A 6.75# H&H? Wow. You are even more a glutton for punishment than I am!
BTW, I'd love to hear your thoughts from beginning to end (repetition from past posts will be forgiven!) on the .590" casehead on k98's, MII's, M70's and the like at "modern" pressures. Also feeding issues.
As you may know I've been keen on a 3.1" COL Rigby-based line for a couple years, just haven't quite found the balls for it yet.
[Nothing as extensive as yours, mind you. I'm thinking 358 and 475 mostly, maybe 416 as well.]

HA!/DOA will protect this information until later. HA! If Dakota can do it then Lakota can too.

quote:

Originally posted by D Humbarger:
Dakota better be careful or they will have Rick Jamison all over their ass!

good one!

the mini-me mbogo sounds interesting...untill then the 470 ar is king

rip...will the 423 lap-dak have more capacity than the boom stick? the boom has a verrry much forward shoulder so it might be the same.

Boomer,
Don't know yet until we have some water capacity measurements on the .423 Dakota Lapua, as the case taper may be blown out.

The .457 Lakota Boom Stick will definitely have more Whomp and Whump on both ends of the rifle than the .423 DL.

The .457 LBS is definitely not for sissies when built into the lightweight wand it deserves, a Boom Stick among Thunder Sticks it will be.

an 8lb rifle would be exciting

when you pull the trigger of the thunderstick packed with a boom stick it will feel like being hit by lightning...but hey...i like a good packing big bore

when does it come out?

quote:

470 Mbogo Short.

you mean 470 lakota boom stick!

hey rip...lets make the 416, 458, 475 on the 423 dakota lapua our proprietary carts...they will fall in the boom stick line since they are for std. mauser length actions soooo 416 lakota boom stick, 458 lakota boom stick and 470 lakota boom stick

like how we wildcat brass that is not even out yet

quote:

Originally posted by boom stick:
hey rip...lets make the 416, 458, 475 on the 423 dakota lapua our proprietary carts...they will fall in the boom stick line since they are for std. mauser length actions soooo 416 lakota boom stick, 458 lakota boom stick and 470 lakota boom stick

like how we wildcat brass that is not even out yet

An 8 pound Ruger .457 Lakota Boom Stick sounds great to me. With 2.5X Leupold and Ruger rings, 4 rounds of ammo, and sling added on it will be about 9.75 lbs, and heap big medicine down range.

As to your impetuosity for an extended Lakota line, this reminds me of an old joke. The punchline is spoken to the mule pulling the wagon: "Patience Jackass, patience ..."

After all, HA!/DOA is merely a hobby.

just want to lay claim to the intelectual property...kinda like the old days when if you found some land not on a map you get to name it and claim it for your own...yeah...patients is not one of my most used virtues

quote:

Originally posted by boom stick:
just want to lay claim to the intelectual property...kinda like the old days when if you found some land not on a map you get to name it and claim it for your own...yeah...patients is not one of my most used virtues

boom stick,
You are fired again.

HA!/DOA is a hobby, with hobby losses only deductible to the extent of hobby gains. We do not lay claim to "intellectual property" nor require wood upgrades at Hilltop Arms, Inc. Our main product is intellectual freedom, honesty, good ideas, no-nonsense firearms that function, and faultless cartridge design ... well, the .457 Boom Stick may be a fun little joke, but there has to be an exception to every rule, a little bad to accent the good: Viking Law.

You are welcome to the "Boom Stick" brand name. Please start your own proprietary line, the BS Brand.

Henceforth the short-necked .45 Lapua is to be called:

The .450 Lakota Thunderstick

Intellectual property MY ASS!

i was not serious about the "intelectual property" thing...just good fun thats all...thunderstick is a good name too but maybe we should name it after an animal or historical figure...458 t.r?...he was short but believed in a big stick 458 big stick (458-b.s.)