Been thinking about this idea for some time. Cousin to the 404-375 but the taper of the 300 HH case will give a similar cartridge, without a shoulder and a long neck tension area. Same philosophy and benefits as the 404-375 but using a more versatile caliber bullet.

Below is the 400HH

I'd be all over it if I hadn't a KDF going now. Sounds like a worthy upgrade for all the 300H&H's on mod 70 and Rem 721's.

375H&H necked up to .411 ... 400H&H

After running my 40-90 SS Improved thru QuickLoad and finding out that it is basically a 416 Taylor, I am now wanting a 411 KDF. I have 2.5" mag brass, some 300 win, no 375,,,,,but I do have 340 brass. We need more 41s!

And what are we using for bullets?

Before the current component shortage .411 dia bullets were available ..
Barnes TSX
Swift A Frame
CEB Bullets Raptors and Solids
Northfork Bullets Softs and Solids
Hawk Bullets Softs
Hornady .410 dia

Reinventing the wheel IMO..Keeping in mind you still have the falt of the original case that stretches. The 300 H&H has always been a favorite of mine, but its nostalgia, there are better case designs such as the 375 Ruger case or 9.3x62..But to each his own is also a factor. Also some big well known produces a 416/300 H&H thats pretty much fallen on its face. I doubt that any of them are as good as the 416 Rem for a hunting rifle, a .411 bullet to a .416 bullet isn't going to be noticed by any of the big 5..

I called the 400-375HH the 400 Karamojo
I have a couple dummy rounds. I like it and it is simple but I like a long neck as a philosophy. The body taper can keep going to take out the tiny shoulder but it has a minimal neck tension area.

quote:

Originally posted by Zephyr:
375H&H necked up to .411 ... 400H&H

quote:

Originally posted by MoreBS:
And what are we using for bullets?

I like the 300 grain 405 Win bullets for most things for this cart unless you are talking big 5

Cool! Who makes this?

quote:

Originally posted by Atkinson:
Reinventing the wheel IMO..Keeping in mind you still have the falt of the original case that stretches. The 300 H&H has always been a favorite of mine, but its nostalgia, there are better case designs such as the 375 Ruger case or 9.3x62..But to each his own is also a factor. Also some big well known produces a 416/300 H&H thats pretty much fallen on its face..

quote:

Originally posted by boom stick:

quote:

Originally posted by MoreBS:
And what are we using for bullets?

I like the 300 grain 405 Win bullets for most things for this cart unless you are talking big 5

Are you talking the 300 grain Hornady? SP

That is exactly what I was thinking for crows to cows. 300 @ 2500 FPS should be good for 99% or what I will need it for. 400 grain hard cast bullet should have all the bullet base within the neck area for using gas checks.

Have you shot anything with the 300gr Hornady made for the 405 at 2500fps?
I've shot the same bullet in my 400H&H at 2700fps which far exceeds the bullets cability.. the only thing that I've shot with it are Woodchucks like shooting a Varmint Grenade turns everything into a grey mist

quote:

Originally posted by Zephyr:
Have you shot anything with the 300gr Hornady made for the 405 at 2500fps?
I've shot the same bullet in my 400H&H at 2700fps which far exceeds the bullets cability.. the only thing that I've shot with it are Woodchucks like shooting a Varmint Grenade turns everything into a grey mist

That is why I was asking, I have had them fragment on deer at 2150 fps.

But then there are the cut down 300 Barnes. 270, 240 and a 210s. Waiting to shoot a deer with the 210 @ 3000 fps.

I know they are soft and better suited to a impact velocity under 2,000 fps. I would tailer the velocity to the game. If it is a important hunt, I would use the right bullet and velocity. A lot of shooting would just be practice.

The Hawk 300 .032 work well at 2150 also.

A Hawk .416 300 .032 tends to blow up at 2500, but group well!!

I have tested the sized down .416 350 Mag Tips in water and they hold together just fine and accuracy is good!

Use the .60 jacket, Hawk has a varity of jacket thickness..I shot 22 head of PG with the .60 jacket in my .338 Win. Expansion was big time and core just rested on the jacket and I poped them out with my finger and several seperated, they killed quickly however..I do wish Hawk would solder there cores, I think it would improve them. I like them in the 45-70 and 348 win, they perform very well indeed in the old win calibers..

I like it. Now THIS, could be a good rebore candidate. The factory 400 H&H needs a decent set back due to the shoulder location and the overly long neck. And JES will do a 410/411 rebore.

quote:

Originally posted by MileHighShooter:
I like it. Now THIS, could be a good rebore candidate. The factory 400 H&H needs a decent set back due to the shoulder location and the overly long neck. And JES will do a 410/411 rebore.

Yes, depending on the barrel of the donor. I don’t know what the barrel diameter of the different offerings out there from the majority makers. Anyone have the muzzle barrel diameter of say the Winchester? It is a good option for 400 lovers. I would guess performance of 400 @2,300 fps with minimal modification. The 375HH donor would already be recoil ready but requires a re-barrel. The 400-375HH aka 400 Karamojo could be another option but I like the long neck of this idea. the 400-300HH looks like a beauty of a cartridge option especially considering matching 300HH, 375HH and 400-300HH guns to have variety, back up, overlap, same set up and muscle memory. I don’t have any dummy rounds made yet but if someone has all the capability and desire to make one, please post a pic. Thanks.

More BS,
The North Fork for the .405 WCF will not fragment easily. I shot a CPS through the shoulders of a Water Buff and turned bones into bone meal, No bullet fragments. That MV was 2350 FPS.

In my .405, the 300 grain Hornady at MV 2250 fps has killed well with no problems. Never needed it at a higher velocity on thin skinned game.

https://www.northforkbullets.c...alibers-and-weights/

They list .411s, just not sure how to get them?

MoreBS

reloadinginternational.com is the American distributor

quote:

reloadinginternational.com

https://reloadinginternational...Rifle+Bullets+405cal

This is all they show?

Seems like somebody needs a full time job!! How about a .416 Remington?? There is no advantage to a .411 bullet these days of shortage and what if it gets worse, Biden and his henchmen are working day and night on that..

In my wildcatting days I built a 450-416-3" double on a Browning double, shot some buffalo and some other DG with it, sold it and bought a 450-400-3" and used it for many years with out complaints.

to date Ive yet to develope or know anyone who has that had anything to offer that I needed

http://cartridgecollector.net/400-griffin-howe


The concept is quite old with being quite similar to the 400 Griffin and howe from what I have seen from measured cases but I have not been able to confirm the dimensions and G&H lost the records. I have never come across any 400 G&H rifles. This is just an easy way to the same end and that brings me joy. Joy is quite a valuable commodity.

quote:

Originally posted by MoreBS:

quote:

reloadinginternational.com

https://reloadinginternational...Rifle+Bullets+405cal

This is all they show?

click the manufacturers tab on top, scroll down to North Fork. Not the greatest webpage

I may be a bit old fashioned shooting cartridges that are just fast enough such as .405 WCF and .45-90, but they still work quite well and have killed everything shot.

The .405 WCF typical velocities are 2250 fps for 300 grain bullets and 2100 fps for 400 grain bullets and those bullet/velocity combos seem to leave no game standing. Since that works, I have refrained from pushing the bullets to higher velocities.
My .45-90 velocity of 2150 fps has worked well with 450 grain NF bullets on large DG. Lesser bullets are fine for thin skinned game, such as 300 grain Nosler PP on leopard.

I am not a cartridge designer or developer, so I must find the best fit cartridge/rifle to my need and make it work. Fortunately, there are many good combinations to explore.

quote:

Originally posted by MileHighShooter:

quote:

Originally posted by MoreBS:

quote:

reloadinginternational.com

https://reloadinginternational...Rifle+Bullets+405cal

This is all they show?

click the manufacturers tab on top, scroll down to North Fork. Not the greatest webpage

Out of stock, but I found them, Thanks!!!

I agree with crsshelton, the 45-90 with a proper load is every bit as good as the Alaskan 450s and what not, and it walks on the heels of a 458 Win from a practical point of view..Its quite the caliber, shame it can't fit in a win 71..Buffalo Arms has a number of 45-90s however..The onl reason I don't have one is component problems which I tired of messing with, its bad enough with the 45-70 and 348 win...

Hijacking my own thread. You mentioned the 348 and it reminded me of something similar where you do a simple neck up to get rid of the shoulder to go to body taper to neck area by necking up to 458 for a different flavor 458 on the 348 case aka 458-348. Same concept of wildcatting. Rebore a 348 to 458 and voila!!! Should it be called the 458 Polar Express? That should piss off some people lol. Maybe 458 Nanuk (Inuit for polar bear)
Thoughts?

quote:

Originally posted by boom stick:
Hijacking my own thread. You mentioned the 348 and it reminded me of something similar where you do a simple neck up to get rid of the shoulder to go to body taper to neck area by necking up to 458 for a different flavor 458 on the 348 case aka 458-348. Same concept of wildcatting. Rebore a 348 to 458 and voila!!! Should it be called the 458 Polar Express? That should piss off some people lol. Maybe 458 Nanuk (Inuit for polar bear)
Thoughts?

That’s pretty much what a .450 Alaskan is already.

458 Alaskan is shorter and has a shoulder. 458-348/Polar Express/Nanuk should theoretically be better at ejection. This would be better in a 348 conversion due to OAL.

http://www.gmdr.com/lever/450alaskantext.htm

The Fuller version has .004 less taper and feeds better, so he says.

Long, big action? (e.g., CZ safari) Then chamber a 416 Rigby. You can handload from comfy factory-load levels (=416Rem) all the way to another level with 416Weatherby ballistics, and anything in between. (I would recommend a 12" or 14" twist to accommodate newer monolithic options, but the traditional 16.5" twist will handle lead-core bullets up to 450grains, and monolithics to 400grain.)

Standard action? Then chamber a 416 Ruger. (It duplicates factory 416 Rem and Rigby)

(The difference between .411 and .416 seems kind of silly to me.)

Done.

I suspect the 416 Ruger is as good as its gonna get..I stumbled on NIB 2008 375 Ruger and I love it..

I also built two 416 Rugers prior to it ever being mentioned, one to a local doctor and big game hunter the other to??????, both loved the caliber and are now in production or were??
A neat case well designed indeed..I just necked up the 375 Ruger, new at the time..

Were I still hunting Africa Id definitely put one together hop a flight to Dar es Salaam.

H&H should've necked the 375 H&H case up to .423 without blowing it out, then they would've had something. The equivalent of a 404 Jeffery with easier feeding and the H&H name. It would've looked like the little brother to the 470 Capstick.

quote:

Originally posted by boom stick:
458 Alaskan is shorter and has a shoulder. 458-348/Polar Express/Nanuk should theoretically be better at ejection. This would be better in a 348 conversion due to OAL.

There's a set of 450 Alaskan dies on E bay now but they want $250 for them.