This came up on the wildcats forum, from member drewhenrytnt:

Has anyone ever catted the .416 Rigby (full length) to .423?

From Dr. Ken Howell's excellent book, designing and forming CUSTOM CARTRIDGES for rifles and handguns:

The Master, Gil Van Horn, probably did this in the 1970's or 80's, when he had to turn the belts off of 378 Wby brass to get an approximation of the Rigby case. He beat Dakota Arms to the .423 Dakota-Lapua by decades:



Then there is this obscure use of the .425WR bullet diameter on a full length .416 rigby case. 1913 Kynoch drawing!!!



Wildcats are a means to an end and sometimes merely an end in themselves, I reckon.

Drew, will you be first to do a bona fide full length .423/.416 Rigby?

Looks like I am going to be the first in the world to do this one too?

All I have to do is run the .395 Tatanka reamer (with .423 pilot) into the .423/.338 Lapua Mag barrel lying fallow, and presto-change-o: .423 Tatanka or .423 Lapua Long, i.e. .423/.416 Rigby 20-degree.

Giving the .416 Rigby a 20 degree shoulder increases the case capacity, don'tcherknow?

I hereby claim to be the creator of the .423 Tatanka (a .423/.416 Rigby 20-degree).

Another one-of-a-kind wildcat to join the .395 Tatanka and 500 Mbogo in uniquity. Mine! All mine! Hoo-ha-hahahahahahaha!!!

can't call it a rigby, ron, it is a lapua.. SHORTER than then rigby... by .174 or so...

423 lapua ... can you NOT use the all to dang confusing tonka/krakatoa name?

Jeffe,
You are not making any sense.
The .423/.338 Lapua Mag. is 2.724" long. I've done that and unscrewed that barrel.
The .423 Dakota-Lapua is a 2.5" cartridge.

I am talking about a new one.
Read the post just above yours.
.423 Rigby it is.
Three one-of-a-kind huckleberries:

.395 Tatanka 2.9" 20-degree
.423 Rigby 2.9" 20-degree
500 Mbogo 3" 35-degree

All based on full length .416 Rigby, except the 500 Mbogo is even longer: 3.000", trim to 2.990".

I claim these in the name of RIP.

Afterall, the 450 Rigby does not have a 45-degree shoulder, eh?

I vote 425 Berry Rimless Nitro Express...
or 425 BRNE

Sure to give something heart BRNE

Or BRNE a hole in yer bank acct...

Have fun!

Save your pennies for the S&H 475 Teufel.

Brass available next week.

Build it on a #1 or High Wall.

150 Grains of High Test behind your 475 - 500 Grain .475" Pellet!

Boomie,
I dare anyone to tell me that the .423/.416 Rigby has been done before and called the ".423 Rigby."
The new .423 Rigby has a 20-degree shoulder and has 2.900" brass length.

It's mine! All mine! Hoohahahahahahahaha

Watch out guys!! RIP has a woodrow for a new Wildcat!! Sounds like he'll be adding onto the house again to accomodate all the new versions of the .423!!

Of course I have to ask! Who makes .423" bullets of any quality??

Mac,
Is the world ready for a 4.25" long straight-case .475 cartridge: .475 Teufel? 3000 fps with .475"/475-grainers?

3000 fps with a .423"/320-grainer is enough whump and whomp for me, thanks.
.423 Rigby Finally a cartridge worthy of this bullet:

how bout just inside neck reaming off a couple thou on Rigby cases then 416 rigby chamber a 423 barrel and use Rigby dies...

Save $500 and 3 months time and call it a friggn 423 rigby...

That is an expensive .007" otherwise...

Oh yeah...this is wildcatting isnt it

RIP

I see your situation RE: the .423" I say carry on and lets see what you can do. So you're building a whole line of Berry-Bombers now?

.395", .423", ???"

The 475 Teufel will run Pinnacle Faux BP for extra amusement. 150 Grains of RL19 if your rig is up to the task. I'll do the first one and loan it out for some live target testing to approved crash test dummies.

boomie,
You miss the point of improving the Rigby with a 20-degree shoulder that adds case capacity and makes for slicker semi-automatic and full-automatic feeding in machinegun or DGR. The bigger diameter bullet of same weight will be more friendly to monometals of the modern day. More stable in penetration with lesser length solids too.

Mac: You carry on too.

Looking more closely at the GSC HV (.423/320-gr), it appears that these copper hollowpoints are annealed!!!!
After moly coating???

Gerard: Take a bow.

Compare the .423 Rigby (2.9") to the .423 Lapua Mag. (2.724") and to the .423 Dakota-Lapua (2.5"):

What? No .423" Gibbs?? .423" BMG? .423" x 115 Soviet........no wait that's my territory!

The .395 Tatanka and the .423 Rigby: A rare pair.
.395/310-gr S&H Brass SHark
.423/320-gr GSC HV

"RIP's Instant Wildcatting - What can I do for you today?"

"Yes sir we do instant Wildcats, Screenprinting, Signmaking, Frontal Lobotomies and Tarot Reading while you wait"

"Well sir that's a good question! We have 3289 different reloading dies here in our shop so we can make any Wildcat instantly"

"Yes we do have a package deal on the Partial Frontal Lobotomy with a 50 caliber wildcat! Would you like fries with that?"

"That'll be $79.95 - Drive Thru please"

quote:

Originally posted by RIP:
This came up on the wildcats forum, from member drewhenrytnt:

Has anyone ever catted the .416 Rigby (full length) to .423?

From Dr. Ken Howell's excellent book, designing and forming CUSTOM CARTRIDGES for rifles and handguns:

The Master, Gil Van Horn, probably did this in the 1970's or 80's, when he had to turn the belts off of 378 Wby brass to get an approximation of the Rigby case. He beat Dakota Arms to the .423 Dakota-Lapua by decades:



Then there is this obscure use of the .425WR bullet diameter on a full length .416 rigby case. 1913 Kynoch drawing!!!



Wildcats are a means to an end and sometimes merely an end in themselves, I reckon.

Drew, will you be first to do a bona fide full length .423/.416 Rigby?

You mean the .404 Schüler Magnum?

quote:

Originally posted by RIP:
Mac,
Is the world ready for a 4.25" long straight-case .475 cartridge: .475 Teufel? 3000 fps with .475"/475-grainers?

3000 fps with a .423"/320-grainer is enough whump and whomp for me, thanks.
.423 Rigby Finally a cartridge worthy of this bullet:

RIP

Your project looks very interesting.
I have a batch of those GSC .423 bullets in the mail for my 10,75x68. I hope they can be loaded up to speeds a bit faster then my old DWM ammo. My barrel is after all a full 70cm
Do you have a fire stick for those .423 Rigby rounds?

Cheers,

André

They also looks very interesting for my .425 Fossdal. Should be about 2350 f/s, that aint bad...

quote:

Originally posted by husky:

quote:

Originally posted by RIP:
This came up on the wildcats forum, from member drewhenrytnt:

Has anyone ever catted the .416 Rigby (full length) to .423?

From Dr. Ken Howell's excellent book, designing and forming CUSTOM CARTRIDGES for rifles and handguns:

The Master, Gil Van Horn, probably did this in the 1970's or 80's, when he had to turn the belts off of 378 Wby brass to get an approximation of the Rigby case. He beat Dakota Arms to the .423 Dakota-Lapua by decades:



Then there is this obscure use of the .425WR bullet diameter on a full length .416 rigby case. 1913 Kynoch drawing!!!



Wildcats are a means to an end and sometimes merely an end in themselves, I reckon.

Drew, will you be first to do a bona fide full length .423/.416 Rigby?

You mean the .404 Schüler Magnum?

Thanks for bringing that obscure cartridge back to attention: edit:: Did a search here and found the thread Alf started on this, I had seen this before and forgot about it:
The 404 Schuler may be based on either a 450No2 Musket with the rim turned down, or the .416 Rigby, but it is shorter than the .416 Rigby and severely rebated so it IS NOT A .423/.416 Rigby. Period.

Andre',
I am still waiting for someone to tell me it has already been done before.
My worthless .423/.338 Lapua barrel could be easily turned into a .423/.416 Rigby.

Bent,
That would indeed be a great bullet for you.

I thought you said "no more wildcats"??

Good luck with the new project!

quote:

Originally posted by Charles_Helm:
I thought you said "no more wildcats"??

Good luck with the new project!

Charles,
Getting this one in line behind the others still pending, it will be next year.
I said no more new wildcats this year.
It has been 13 months since I ordered the Satterlee action for .416 Rigby.
Gotta think ahead.

I knew I should have read the fine print!

Do you get updates on your project (Satterlee action)? I never see him replying to your posts.

Charles,
No, I do not get updates.
It is like getting blood out of a turnip to get any communication from Stuart Satterlee.

He glibbly promised 6 months when I ordered the action.

That date changed to 14 months, estimated delivery.

About 2 more weeks and that date will have arrived.

Stay tuned.

I hope I don't have to look him up in person to ask for a refund of my deposit.

Stuart, are you reading this too?

Maybe I should start making M98 style actions too! (now that I have access to a machine that will crank one out every five minutes, milled, drilled, tapped, polished, numbered, etc.....

quote:

Originally posted by Macifej:
Maybe I should start making M98 style actions too! (now that I have access to a machine that will crank one out every five minutes, milled, drilled, tapped, polished, numbered, etc.....

When pigs fly?

A stainless Mauser 98 Magnum with double square bridges machined to picatinney bases?

Can you put a 20-minute decline on that integral square-bridge picatinney?

What price?

$2000 complete less trigger......all you need to do is find another 99 guys who want the same thing.

Mac,
Getting 100 guys to agree on anything on this forum ... when pigs fly!

BTW,
The 404 Schuler is severely rebated and shorter than the .416 Rigby.
It may be based on the 450 No.2 Musket with rim turned down, or very similar to .416 Rigby case head.

The shortening and the rebating disqualify it for .423/.416 Rigby status.
HooHahahahahahahahah.

quote:

Originally posted by RIP:
Charles,
No, I do not get updates.
It is like getting blood out of a turnip to get any communication from Stuart Satterlee.

I'm very sorry to hear that. I hope you get some info soon.

Charles I shall squeeze the turnip again on or after 19 Feb 2008: 14 months.

404 Schuler: A drawing I have shows the head diameter to be .5823" or 14.79mm. Smaller than the Rigby .5890" max. It was made from 378Wby brass with belt turned off in this iteration.
Rim diameter is .5319" or 13.51mm.Brass length is 2.756" or 70.00mm.

577 Robert posted details here in 2003 regarding this cartridge. There was one specimen of the original brass case known to exist, back then. Mounted in a display in Germany, IIRC. It had blank headstamp. A subsequent attemp at revival bore the headstamp:

Zi-Di
.404 Schuler Mag.

I think this used the turned-down and shortened .378 Wby basic brass. It would very similar in capacity to a .423/.338 Lapua Mag.

Close but no Cigar.

quote:

Originally posted by RIP:
Andre',
I am still waiting for someone to tell me it has already been done before.
My worthless .423/.338 Lapua barrel could be easily turned into a .423/.416 Rigby.

Bent,
That would indeed be a great bullet for you.

RIP

The .338 LM seems like a stronger and thicker case then the .416 Rigby.
I like wildcats based on the strong .338 LM case.

I look forward to seeing your .500 Jeffery rifle when you complete it.

Cheers,

André