Above, Left to Right:

.457 Lapua Boom Stick
.307 Lapua Chui Long Claw
.337 Lapua Simba Long Fang
.377 Lapua Nyati Big Boss
.427 Lapua Kifaru Long Horn
.457 Lapua Tembo Long Tusk
.470 Mbogo
.509 Barnes Buffalo (Yes, the .510 BB is back!)



Above, Left to Right:

.416 Dakota
7mm Dakota
.300 Dakota
.330 Dakota
.375 Dakota
.404 Dakota
.450 Dakota
.423 Dakota Lapua (The mystery cartridge that nobody knows anything about yet is represented by a Lapua case and a North Fork .423/380grSP.)

Any comments welcome, either praise or pissing on my parade, or Dakota's.

Anything at all known about the .423 Dakota Lapua cartridge specs would be interesting. Sumbuddy who know?

I never got around to sleuthing it out other than to call Charlie Kokesh, and he was playing dumb at the time.

the top left one is damn sexy...

did you fall out of love with the regular length 458 in the lapua case??? will be great in a 375 cz conversion.

Boom Stick,
Does "regular" mean the .375 H&H length? That would be the .457 Lapua Tembo Short Tusk:



Thanks for the photo.

That is just a shorter throating of the Long Tusk. It would be nice in a Winchester M70, but they are all collector's items now, so I don't want to open up any boltfaces on Winchesters until the right action comes along.

So, Ruger for the Boom Stick and CZ for Big Five Lapua "7's" except for the .427 Kifaru which is being done on a Dakota 76 African action.

BTW, the Dakota action that came from Brownells had only one locking lug touching and had to be lapped a lot to get both bearing. Also the barrel receiver threads in the action were so burred and boogered the action had to be sent to Dakota to get them to clean up the threads. It is slowing down progress.

I will post a comparison of loads chronographed for the .404 Jeffery versus the .427 Lapua Kifaru Long Horn: Same bullets and same barrel maker (McGowen), length (24"), #5 contour stainless, and twist (1 in 10") ...

If the Dakota action ever gets cleaned up and the rifle finished.

Boomer,
You really must have a rifle chambered for your namesake, the .457 Boom Stick.

RIP,

Nice work, as usual.
Question about the Dakota line-up, on the plate I have in my collection, there is an .416 in stead of the .404. I know the .404 is a new cartridge, but is it replacing the .416 Dakota, meaning, will they discontinue the .416?

Bent,
Right, the Dakota cartridge board that you have was done before they brought out the .404 Dakota.
They should have made a set with all of them on the board after that, but for some reason they just stuck in the .404 to replace the .416 Dakota on the display.

Makes the .416 Dakota look like the redheaded stepchild of the line, eh?

Even though the .416 Dakota has got to be one of the best cartridges in the world, its sales must be hindered by the Dakota offering of the .416 Rigby, eh?

Dakota needs to do a new cartridge display with all 8 of their proprietary rounds.

Notice that I have borrowed the .470 Mbogo to fill out the HA!/DOA "Eight." That is the original dummy round that Dave Estergaard so graciously sent to me a few years ago: My .470 Mbogo is a BBK 02.

There is really nothing new in wildcatting. We are just recreating the wheel.

Saeed has data for the .475/.416 Rigby Improved he was shooting before the .470 Mbogo came along.

http://www.accuratereloading.com/475rigby.html

Saeed only got up to 2576 fps with 500 grainers in his .475/.416 Rigby Improved. I got up to 2685 fps with the same bullet in my .470 Mbogo, and could have easily cracked 2700 fps with one more grain of powder.

There are no flies on the .470 Mbogo, and it deserves a place in the best of the best lineup of HA!/DOA.

Saeed's .375/.404 is just a sharper shouldered version of the German 1910 to 1920 vintage 9.5x73mm Miller-Greiss Magnum listed in COTW.

Thanks to your neighbors in Finland for supplying the .338 Lapua Magnum brass. Tell them to keep it coming.

The .510/.505 Gibbs 3.010" has just been renamed for the final time, to ".509 Barnes Buffalo."

This is a shameless bit of commercialism in thanks to Barnes Bullets for making so many great bullets that work so well for HA!/DOA.

Still a BB gun.

i will buy your r+d ruger in 458(7) boom stick...

or if you would make me one what would you charge?

rip...

post another pic with the twin carts side by side 30 chui 30 dakota ect for perspective

quote:

Originally posted by RIP:

My .470 Mbogo is a BBK 02.

RIP, you're a Mbogo'er too?!?!? I've GOT to get on the bandwagon, my .416 Rigby pee shooter isn't big enough anymore.

Boomer,
The .457 Lapua Boom Stick and the .509 Barnes Buffalo are the redheaded stepchildren of HA!/DOA, just like the .404 Dakota and .416 Dakota are for Dakota Arms, Inc. They are last on the list for production schedule, but they will be done. If only I could quit my day job and devote myself full time to HA!/DOA.

As the Left Coast center for operations of HA!/DOA, you ought to get to work on the BLR prototype for the .457 BS. That would give hope to the levergun lovers.

As for the side by side comparison of the Dakota and HA!/DOA cartridges: Why bother? Use your imagination. We are bigger and badder.

quote:

Originally posted by woodsracer:

quote:

Originally posted by RIP:

My .470 Mbogo is a BBK 02.

RIP, you're a Mbogo'er too?!?!? I've GOT to get on the bandwagon, my .416 Rigby pee shooter isn't big enough anymore.

Woodsracer,
Don't laugh:

the 458 boom stick was born for the blr...(with smithing obviously...) i think it is the max 458 you can put in this action. the a.r. being a close second. the only question is what kinda kick you want...might as well use a horseshoe for a recoil pad cuz that is what it will feel like. but hey... there are the 270 kinda guys and the big bore kinda guys...i'll be the big bore kind so no complains here.

Rip,
an honest techinical/engineering comment, so don't get in am uproar

a rigby based case won't fit in a blr without some pretty heavy mods (okay, VERY heavy) ..
case head
internal parts
mag


Sure has alot of capacity though

my bad...i thought it would work...someone told me it would

quote:

Saeed has data for the .475/.416 Rigby Improved he was shooting before the .470 Mbogo came along.

There really is nothing new under the sun.

I am not sure of the exact chronology, but I think when this was mentioned some years ago, it turned out they were working on their wildcats concurrently (mid-90's). Saeed got his data on a website first, but not before Dave E was actually thumping buffalo with his in Tanzania!

Regardless, it has also been re-invented once more since then, by Lazzeroni at the behest of CTB and Geoff Miller. The 12.04 Bibamufu. See below...



To my mind, however, the 470 Mbogo is the clear winner...1) it has the coolest name, 2) there are most probably quite a few more rifles chambered to it, and 3) it is the only one that has been to Africa and used on DG.



Not to mention being the best ROCK CRUSHER...



and H20 BOTTLE BLASTER...



EVER!!!

(OK, maybe I got a LITTLE carried away! Its been a good monday AM so far. )

Cheers,
Canuck

Canuck,
Thanks for contributing so lavishly to the thread.
I hear you will soon be shooting a couple of Tanzanian mbogo with your .470 Mbogo.

My next "annual" buffalo will be with the .470 Mbogo, promise, whether bison, water buffalo, or cape buffalo. I just can't afford a cape buffalo every year, what with not being able to bring back 500 pounds of frozen meat or biltong in my luggage. Not a smart thing to try.

The .416 Barnes Supreme was knocking about in 1949, before the .416 Hoffman, before the .416 Remington, etc., etc.

With a name like .416 BS, it never had a chance, had to wait for George Hoffman to come up with a better name.

Now I am worried about the .457 Boom Stick ...

Of course we all know that Dakota Arms got wind of developments at HA!/DOA so they had to do a me-too cartridge like the ".423 Dakota Lapua." Another case of simultaneous development of similar ideas?

I don't think they can improve on a simple, unadulterated neck-up of the .338 Lapua Magnum to .423 caliber. It will be interesting to compare theirs to the .427 Lapua Kifaru Long Horn.

jeffe,
Agreed.
I really don't want to mess with a BLR, boom stick's idea, too much trouble for me. I was just hoping to get him started on some left coast project. I figured he would soon see the light and switch over to a bolt action.

Anything is fair if it will get him jarred out of the contemplative mode, you know, maroon bathrobe, brandy snifter, cigar and dummy cartridge study, standing beside the fireplace with candles lit, contemplating ...

hey...i worked hard to make that picture happen...i think it is a lovely roose on whats his name...

next pose...

bathingsuits and large caliber guns...not me in the bathingsuits...sorry to dissapoint

my new job is going well and i hope to have a few more guns in my meger collection by end of year...question is what to get for my birthday in march?

quote:

My next "annual" buffalo will be with the .470 Mbogo, promise, whether bison, water buffalo, or cape buffalo.

Thanks RIP...I try. Plus, its a much more enjoyable topic than the crap going on elsewhere here of late!

It is good news that your next bovid will be "Mbogo'd"!! I look forward to the report already.

I understand about the annual cape buffalo thing too. I am hoping to average once a decade!

Cheers,
Canuck

boom stick,
It is hard to find photos of properly stacked and properly packed (packing big bore bolt actions and doubles) young ladies.

quote:

Originally posted by Canuck:

quote:

Saeed has data for the .475/.416 Rigby Improved he was shooting before the .470 Mbogo came along.

There really is nothing new under the sun.

I am not sure of the exact chronology, but I think when this was mentioned some years ago, it turned out they were working on their wildcats concurrently (mid-90's). Saeed got his data on a website first, but not before Dave E was actually thumping buffalo with his in Tanzania!

Regardless, it has also been re-invented once more since then, by Lazzeroni at the behest of CTB and Geoff Miller. The 12.04 Bibamufu. See below...

But before all of this, the.475 A&M saw the light of the day in the late -50's. It has a belt, yes, but othervise, is it not the same cartridge?

quote:

Originally posted by Bent Fossdal:

But before all of this, the.475 A&M saw the light of the day in the late -50's. It has a belt, yes, but othervise, is it not the same cartridge?

Ja, a .460 Wby necked up to .475 is the .475 A&M. Since the .460 Wby is based on a .416 Rigby with belt and rebated rim and necked up, that would make the .470 Mbogo very similar to the .475 A&M.

The much chuckled over P.O. Ackley load for the .475 Atkinson & Marquart was 110 grains of IMR 3031 with 500 grain bullet at 2960 fps for 9860 ft.lbs. Almost 10,000 ft.lbs.

At what pressure? 75,000 psi?

I think the .470 Mbogo has a slightly greater case capacity than the .475 A&M, as well as no belt and no rebate, so it could do 10,000 ft.lbs. too, but only with excessive presure.

Viking Law allows another exception:




The HA!/DOA lineup (written in stone now) left to right above are now:

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

Please, no more PM's.
Lets keep it public.

glad to see i made the cut, whew!

Bent,
the 475 AM is actually a bit shorter than the 470 mbogo, with slightly less capacity.. and the 475 has, welll, enthusiastic reloading data...

you can use 416 rigby brass to make the mbogo, though it will be a hair short, and should start with 416 basic ...

I still feel this is the best bib bore on the planet ... if you go to my website, you'll see soem pics from stc 2004 (i need to update)

jeffe