Being a newbie first time poster on this forum, I asked Paul H, before posting, if the gents here might be interested in seeing what the 400 H&H is all about. Seems this cartridge has received a lot of bashing over on the AR forum. Not much use in bashing this cartridge, as it serves a niche. Both the 400 and 465 H&H are interesting cartridges, and with performance I am certain will be much more than the nay sayers predict. I have put a good bit of effort in both cartridges, obtaining chamber prints and having reamers ground for the 400 and I will do the same for the 465. The 465 is based on the 378/460 Weatherby brass and has the same long neck and gentle shoulder of the 400, also at a 3.500" length.
Hopefully the below post and photo helps to take some of the mystery out of this cartridge.
So, to get on with it, below is my synopsis of the 400, along with a photo comparing the 416 Remington and the 404 Jeffery.
400 Holland and Holland Cartridge
Hollands new cartridge is based on the 375 H&H brass, and uses a .411 diameter bullet. Case length is 2.846 inches, and overall cartridge length is 3.500 inches. The neck is long, in fact, when a bullet is seated to the cannelure; the base of the bullet is at the neck/shoulder junction, where it should be. Shoulder angle is 8 degrees. The combination of a long neck and the gentle shoulder has a few advantages over cartridges like the 416 Remington with the sharper shoulder and short neck: One, the 400 H&H feeds very nicely out of the magazine. Two, the 400 H&H case is less likely to stick in the chamber after firing if both the loads and the ambient temperature are a little warm.
Many have bashed the 400 H&H when comparing it to the 416 Remington, saying: Why another caliber near the 416, and performance surely will be way below the 416 Remington. As the 416s are very popular, affluent hunters wanting a Holland and Holland bolt gun desired a cartridge other than a 416 Remington. My interpretation is Holland and Holland needed a unique cartridge to supplement their line of cartridges and relied on a long period of experience with the 450/400 Nitro Express cartridge in order to design a new cartridge.
Performance? Well, when you really look at both cartridges, performance really is not an issue. Cartridge performance is based on case powder capacity, and a measure of case capacity is how much water is held. The 416 Remington case holds 104.5 grains of water, and the 400 Holland holds 100.5 grains of water (for a die formed case, it will be a little higher after fire forming). Not much difference. And, in the photo below, the 416 Remington case is misleading: The bullet base is way down in the powder space when the bullet is properly seated to the cannelure. For those studying the numbers, the 400 H&H bullets have a slight edge in sectional density.
I have chamber reamers for the 400 Holland and Holland (both a finish chamber reamer and a resize die reamer). I have a Krieger barrel ordered; hopefully it will arrive soon as it has been on order since early January of 2003.
When the Krieger barrel arrives, I will chamber the barrel, install it on an action, and test fire using the Oehler M43 velocity and pressure measuring equipment. QuickLoad predicts 2400 ft/sec at under 55,000 psi, this is about the same as 416 Remington performance.
Rifle construction: The cartridge will feed out of any standard H&H Magnum sized action with at least a 3.500 magazine length. Barrels are a problem, as Krieger is the only US maker that offers a .411 barrel. I am talking now with other barrel makers about making the barrels.
Cartridges: No cartridges available in the US, and they are almost impossible to obtain from Holland and Holland. I will be set up to form cases from basic H&H brass (straight with no head stamp) and I will soon have a head stamp die, so I may properly head stamp the brass.
In summary, if one likes traditional British produced African cartridges, is willing to put up with the case forming situation, and has the time to wait for both barrel production and the custom rifle building, then the 400 Holland and Holland is a nice choice. I like the cartridge, as just looking at it makes me think of old-time Africa and classic African cartridges.
In the photo, we have the 416 Remington on the left, the 400 Holland & Holland in the center, and the 404 Jeffery on the right. All bullets seated to the cannelure. 416 Remington case looks shorter, as it has a very heavy crimp. 3.550 COL on the 416 Remington, 3.500 COL on the 400 H&H, and 3.53 COL on the 404 Jeffery. Just remember, the base of the bullet in the 416 Rem is down in the case taking up powder space.
