Talk:M634 Experimental High-Powered Semi-Armor-Piercing

Note on Ammunition Cartrage Designations:

The second number in a cartrage designation does not necessarily indicate it's length. For some rounds it is the bullet wieght, or powder charge as in the 45-70 a US service cartrage from the late 19th century and for some like the 30-'06 it stands for the year of its military adoption 1906 and some cartrages have no second number like the 308 Winchester (7.62 Nato) or the 45ACP. It can also be just a naming nod to the origins of the round like the 7mm-08 Remington that was originally a wildcat cartrage made from 308 Winchester brass. Also there are lots of rifle cartrages that exceed 9mm even the above mentioned 45-70. Dagger133 01:24, 3 April 2007 (UTC)

7.62mm NATO is 7.62x51mm. .45 ACP is measured metrically as 11.43x23mm. ALL rounds have a metric measurement. Not all of them are referred to in common speech. The .30-06 round is 7.62x63mm if I remember correctly - hardly exceeding 9mm. The second digit ALWAYS designates the length; the first digit designates the circumference of the bullet at the wide end (NOT the cartridge itself, the actual bullet!) Smoke ^{My page}_{My talk}^{My Editcount} 18:29, 12 March 2009 (UTC)

Also, if the designation is formatted in any way other than "(number)x(number)(unit of metric measurement)", then that is not a metric measurement, and I was not referring to that particular second number (the "06" in .30-06, for instance - I'm well aware that the .30 is inches, and the 06 (there is no ') is the year). Ammunition, when written in the format I just outlined, is generally measured in millimeters. Smoke^{Sound off!} 07:44, October 25, 2009 (UTC)

I have managed to find a direct reference to the ammunition used in the BR55 in 'The Art of Halo 3'. It lists the cartridge as 9.5mm x 40 KURZ, leading to the conclusion that the final number is the case length after all, as the current day KURZ ammo has a similar ratio of bullet diameter to casing length. I can also scan in the image (which has all of the ammunition on scale next to each other) and measure off that if need be.
Diaboy 00:42, 11 January 2009 (UTC)

Analysing damage based on real life muzzle energies? I think not...

Most of this article seems to be devoted to comparing the muzzle energies of real life weaponry and ammunition to the damages to characters in Halo. For one, no accurate comparison can be made as the weapon damages in the game are purely for gameplay balance. The already inaccurate comparisons are made worse that there is no accounting made for headshot modifiers, etc. etc. I do not have time to change this now but will do so later. Anyone who is willing to do it before then is welcome. Diaboy 17:09, 21 August 2008 (UTC)

Wrong

When a cartridge is designated metrically, such as 5.56 x (45)<---- this number DOES designate length, just like the battle rifle's ammo type. Griever0311 02:35, 5 April 2009 (UTC)

I've had this argument several times with people on this site. Some won't listen. Smoke ^{My page}_{My talk}^{My Editcount} 18:22, 12 March 2009 (UTC)

the second number only indicates the case length in metric designations NOT in all designations if it dosn't say mm it may not be a metric designation! the oringinal discussion about this round centred on the size of a battle rifle's mag, and "how could you fit 36 rounds in x amount of space if they are 40mm long" the discussion consentrated on the length of this ficional round in a fictional mag.[[1]] see link 9.5mm x40 Dagger133 06:57, October 25, 2009 (UTC)

Read what he said. He said when a cartridge is designated METRICALLY. If it is not designated metrically, then of course it's not going to be measured as such. The picture in the article is obviously measured in millimeters - however, Bungie screwed up the designation and put the "mm" in FRONT of the "x 40", instead of behind the 40 as they should have.

However, usually when it is formatted in that manner in reference to ammunition, it IS a metric designation, and it's usually in millimeters (any other measurement would be ridiculously small/large for a bullet). Smoke^{Sound off!} 07:23, October 25, 2009 (UTC)

Hold up guys. Read what I said, read what Bungie wrote. My reasoning is based on what Bungie acctually wrote,9.5mm x40 Kurz, not what the fanboys intertpreted, believing the original author didn't screw anything up, the 40 could be anything (even the case length in mm). This is suposed to be an encyclopedia you're not supposed to edit source material for the sake of an argument.Dagger133 08:48, October 25, 2009 (UTC)

Uh, no. They wrote the 7.62x51mm NATO designation the same way - incorrectly (7.62mmx51 NATO). They DID screw it up, plain and simple. It's really obvious they went for the metric designation; aside from caliber (inches), there really isn't any other logical way to measure the dimensions of the round. It's a minor screw-up, that's it.

If it is the case length in mm (which it is, as I stated above - it's obviously designated metrically), then the "mm" goes BEHIND the 40, NOT in front of it, as was done on this round, and the measurements of EVERY OTHER ROUND they used! This isn't "editing source material for the sake of an argument", this is correcting an obvious mistake on the part of the developer. Smoke^{Sound off!} 18:50, October 25, 2009 (UTC)

Remove disputed facts banner?, clean-up

I agree with Smoke on the metric ammo designation. Regardless of his new authority as an Administrator, he was a Marine! I would trust a Marine on guns and ammunition over just about anyone (except a higher-ranking Marine, that is). Plus, it's pretty obvious, and anyone arguing the point should simply google "metric ammo designation". Is it OK if I remove the disputed facts tag and clean-up this article? -- Nutarama 22:27, 8 June 2009 (UTC)

Seriously get a grip, just because he is a Marine dosn't make him an expert on ammunition designations outside of the USMC armoury, it dosn't give him a diploma in firearms repair or a bookself of reference material on hundreds of metalic cartrages. Dagger133 07:16, October 25, 2009 (UTC)

I'm no gunsmith/armorer, but I at least know that much. The USMC isn't my only experience with firearms, and a metric designation is a metric designation, no matter what armory the round came from. Smoke^{Sound off!} 07:20, October 25, 2009 (UTC)

Size comparison of 9.5x40 and 7.62x51

The article suggests that the 9.5x40 is a smaller cartridge than the 7.62, this is clearly not true.

Case capacity of 7.62x51: >9 cubic centimetres.

Case capacity of 9.5x40: >11 cubic centimetres.

The 9.5x40 is actually 20% bigger, meaning it should have 20% greater muzzle energy, but then add on the new propellant and longer barrel, and it makes the 7.62 look like a 5.56. Add that to a greater bore diametre, and that means by far greater stopping power. —This unsigned comment was made by 24.19.165.153 (talk • contribs). Please sign your posts with ~~~~

Not necessarily. It means a faster muzzle velocity, but this round is semi-armor-piercing. In reality, that would mean less than impressive terminal ballistics against a live target, as the round would pass right through them. It'll make a larger hole (two holes, due to its penetrative power) - this round is about two millimeters wider than the 7.62 - but your target will not be stopped. Smoke^{Sound off!} 20:38, January 9, 2010 (UTC)

The 7.62mm ammunition used ingame is FMJ-AP, it has the same weakness, in fact it is worse in this regard, hence why you have to land 4-5 shots centre mass to stop a kig-yar. As such, just compare the size of the hole they leave. Compared to a 10mm (it's a good baseline) the 9.5mm should leave a hole ~91% the size, the 7.62 should leave a hole ~58% the size. Even an MP5 beats that. (81%) In other words, if a 10mm does 10 damage, the 9.5 should do 9, and the 7.62 should do 6. A regular 9mm should do 8. If a 10mm does 20, then... you see where this is going. Keep in mind none of these rounds is going to yaw after passing through any less than a full fireteam of marines, if they make it that far, so we don't really need to take the length of the round into consideration. 24.19.165.153 06:16, February 9, 2010 (UTC)

Pistol rounds typically only have half the initial muzzle velocity of a rifle round and do not have the mass or kinetic energy of a rifle round. The size of the hole left doesn't really matter if you're talking about stopping an enemy. How much damage a round does isn't necessarily dependent on its size. A bigger round doesn't always mean your target is just going to drop. You want your target to "stop"? I'll tell you what gives you stopping power: shot placement. Center mass; if that fails to stop them, put one in the head. Hell, that's easier to pull off with less recoil. Smoke^{Sound off!} 12:16, February 9, 2010 (UTC)

We're looking for actual damage done, not pain felt. A high-velocity rifle round is painful, true, and pain is what generally causes somebody to stop, but rifles generally leave a tiny hole, (as is expected of a long, thin bullet) meaning it causes less damage to organs and muscles struck, the wounds bleed less and seal up faster. The reason they are more painful is the energy transferred, which has next to no influence on the lethality of the round. (Increased velocity means a bigger exit wound, but not much bigger.) A low-velocity pistol round, on the other hand, will be far less painful, but generally leave a larger hole, (as is expected of a short, wide bullet) and therefore do more damage to whatever it may strike. It won't "stop" the target like a rifle, but it will be more likely to kill them and do so faster if it does.

As far as shot placement, the chest is actually more likely to stop somebody than the head. A bullet through the lung is dibilitating, as it can make it hard to breathe, and one through the heart with anything bigger than a .32 will leave them dead before they hit the ground. NEVER aim for the head. Only a small section of it is worth hitting, the cerebellum to be specific, and even then you would be better of hitting the heart, a larger, more important target that takes less penetration to reach from most angles. Shooting any lower than the target's eyes will do no more damage than a shot to the shoulder, and the skull is quite tough, often stopping smaller rounds, such as .32 calibre rounds and birdshot, from penetrating even at a perfect angle, and even a battle rifle, such as my M14, will ricochet off at an oblique angle. The head is never a good target for any penetrating or lacerating weapon outside of a hostage situation, and even then only the tiny little section at the base of the skull. The entire headshot principle is remedial.

As far as recoil, it only really matters if you have to land a second shot, and you never should if you place the first shot right. What does it matter where the second round lasts, or even if it hits the target at all, if the first round passed through the heart? Avianmosquito 01:50, February 10, 2010 (UTC)