Hi there,
Just to add my ha’pennyworth to a few of the points mentioned along the way in this thread with regards ballistics…:
1)My Sierra manual* classifies .30 Carbine as a pistol round, and states that it is unusable as a reliable deer cartridge even from a rifle. (I know deer aren’t people, so take from that what you will.)
2)Janes Guns describe the M1 and M2 carbine as “One of the most appealing of weapons, light, handy, easy to shoot and totally useless at ranges over 200yards, since it fired a pistol bullet”. (They agrees with the 6 mill production figure over its service periods, but says that it is still in production as a commercial weapon.)
3)Ballistic information wise, this may be like other ‘vintage’ calibres, such as 6.5x55mm Swedish, in that there are loadings kicking around which vary depending on whether they are designed to be used in ‘original’ rifles or modern variants (which are stronger). If anyone knows the SAAMI standards for .30Carbine, I would be interested.
The data in the manual sadly is based on a 7.5" barrelled pistol, so is not comparable.
Federal also offer a loading for this round and they quote a MV of 1990fps and a ME of 967.1ft/lbs. Retained energy at 200yds is quoted at 376.2ft/lbs, and 1241.2fps. Assuming a 100yd zero the bullet drop would be 12.87inches. This ME at 200 yards is comparable to a 9mm pistol round.
Now then, what I find most interesting about this with regards to Cuts mates tale of putting a few in a Terr who didn’t go down, is that the MV is very low: It is commonly accepted that 2000fps is an important velocity milestone, after this hydrostatic shock starts to occur when a bullet strikes animal tissue, which provides a much more instantaneous “knockdown” effect than a comparable amount of energy delivered as more mass and less velocity. (This does assume a reasonably amount of mass, really weeny bullets at stupid speeds aren’t up to much either.) Without this velocity, which effectively causes a ‘ripple’ through the soft tissues of the body causing significant damage, you are effectively only punching .308" calibre holes through someones body. (Yes, the actual size of a .30 round in .308" diameter.) There are, I believe, plenty of instances of people being stabbed multiple times and still having a fair amount of energy! They will eventually die from blood loss if untreated, but unless you are lucky enough to hit a vital organ they will not neccessarily drop immediately. Given that the terr was running away, his motivation to keep going may have been somewhat firmer than the motivation of the chinese troops to keep attacking; therefore, he keeps running for a few minutes despite being shot, whilst the chinese troops sit down (and largely bleed to death) because that is a better bet than advancing and being shot again. (I’m not convinced I put that well, but you get my point, I hope.)
Anyway, as to whether the M1 Carbine is a Assualt Rifle or a SMG, personally, I would have called it a Semi Automatic Carbine! :lol: That is to say, a short rifle. (Which in this case is chambered for a pistol round) The later automatic versions could arguably be said to be a SMG though.
*This is a reloading manual, that is, a book of data and ‘recipes’ for construct centrefire ammunition from its component parts. As such it contains a variety of handy information about most rifle and pistol calibres currently in use. I mention this in case anyone confuses it with the “Ladybird Book of Cartridges.” :lol: