Let’s start off with a question: What is the best round for the AR-15? At the Big 3 East conference this week, a new caliber was unveiled for the AR-15. Called the “.224 Valkyrie”, it is based on the .30 Remington/6.8 SPC case, necked down to .22 [Read More…]
In yesterday’s article, we took a look at examples of two different methods of design, which I called “preference-driven” and “process-driven”. For these examples, I supposed two engineers from two different cultures – called [Read More…]
If you were designing the next small arms round, how would you do it? What methods would you use to determine its physical characteristics and performance attributes? How would you know what was too large or too small, too powerful or too weak? Perhaps more critically, [Read More…]
What do you get when you take the venerable speedster 7.62 Tokarev, and load it with a muzzleloader-style sabot and 50gr .22 cal projectile? You get one of the most interesting pistol, submachine gun, and personal defense weapon ammunition concepts there is! Today [Read More…]
It has been a little while since we visited the subject of modern personal defense weapon calibers, so to start it off again we’ll be taking a look at a new high velocity round that is only a few years old: Armscor’s .22 TCM. This round was reportedly [Read More…]
In the rush to augment the infantry’s firepower with new advanced small arms technologies, we may be on the precipice of crippling their ability to fight wars. The push to equip the infantryman with more powerful rifles and machine guns risks reducing his mobility [Read More…]
Does pointing your gun up or down affect its accuracy? The answer is “maybe” according to a recent US Army Armament Development, Research and Engineering Center (ARDEC) presentation released at the 2017 National Defense Industry Association small arms [Read More…]
The following is a guest article written for TFB by reader Tim about his efforts with his friend Paul to recreate the historical .280 British (7x43mm) round developed for the EM-2 and FAL rifles during the early pre-NATO rifle trials of the late 1940s. Enjoy! [Read More…]
A company called AmVIEWnition makes 3D castings of wound channels of different handgun cartridges. These cast wound channels are called “3D Solo Blast”. These are intended for educational purposes to better understand the terminal ballistics of [Read More…]
It is not only the West that has developed small caliber, high-velocity pistol-compatible personal defense weapon ammunition; in the early 1990s, the People’s Republic of China also developed such a round. Called the 5.8x21mm DAP-92, it fires an 0.229″ [Read More…]
Reid Henrichs, formerly of Tactical Response and known for his down-to-earth style has posted a video doing the testing that we all wish we could do through our own home. Using common calibers and ammunition, Reid and his training cohort from Valor Ridge put rounds [Read More…]
When I started the Modern Intermediate Calibers series, I did not expect it to grow as large as it has. The initial plan was for 7 major calibers, which grew into well over 20, and the spinoff Modern Personal Defense Weapon Calibers, which itself will have at least 20 [Read More…]
One potential solution to the problem of a suitable anti-armor pistol and submachine gun round is to take the existing ammunition system and introduce one or more new kinds of ammunition which provide additional armor piercing capability through higher muzzle velocity [Read More…]
So far in the Modern PDW Calibers series we’ve talked about small caliber, high velocity PDW rounds like the 5.7mm FN and 4.6mm HK, and we’ve tackled larger, punchier calibers like the 10mm Norma Auto and the 7.5mm FK. However, we still have not tackled the [Read More…]
Oh yes, it’s that time. The 10mm Automatic, what hasn’t been said about it? Well, a decently sourced article about its history*, maybe, but that’s for another time. Right now, we’re considering the 10mm Auto (or 10mm Norma as it’s more prim [Read More…]
Since we’ve discussed the .30 M1 Carbine caliber, it is probably only a matter of time before someone mentioned another .30 caliber round used by the Allies during the Second World War, that being the 7.62x25mm Tokarev. The round is a turbocharged derivative of [Read More…]
The US .30 cal M1 Carbine is one of the most important developments in the personal defense weapon story, being one of the very first* intermediate calibers to be adopted as standard issue by a nation, and arguably the first purpose-designed PDW caliber in history. [Read More…]
Today on Modern PDW Calibers we’re going to look at what might seem like a humdrum round, but which represents an important performance band for the modern personal defense weapon. That round is the 5.56x30mm MARS, a purpose built “micro assault rifle” [Read More…]
It’s been a while since we’ve done one of these Modern PDW Calibers installments, but we’re back, and today we’re looking at a very new round on the market, one that is currently making some pretty big waves in the pistol world. I am talking of [Read More…]
Lehigh has a well-deserved reputation for making gimmick ammunition. Their Controlled Fracturing Hollow Point pistol ammunition does perform as advertised insofar as it fractures, but fragmentation in a pistol round is not a desirable feature. Fragmentation can be [Read More…]
While 6.5 Creedmoor is all the rage in the OEM world, quite a few in the reloading world have been looking at .260 Remington and its slightly hotter, smaller cousin, the 6mm Creedmoor for their precision long-range builds. Like the 6.5, the 6mm Creedmoor eeks out just a [Read More…]
We all love shooting and hitting our targets. Some of us have gone beyond shooting cans behind the barn to hitting targets far, far out. Others go all in in practical shooting, with IPSC hangdun/rifle /shotgun or 3 Gun. Regardless why we shoot, it’s always nicer [Read More…]
In the last installment, we talked about the trade-offs involved in increasing or decreasing the projectile’s diameter (and, thereby in convention systems, the bore’s diameter as well). One of the major pieces of the equation that we left out was how [Read More…]
Probably the most obvious element of ammunition design is the choice of caliber, or more specifically the choice of bore and bullet diameter. These two dimensions are of course closely linked in conventional ammunition systems (they can be decoupled with sabots, but [Read More…]
Looking at the 24 different calibers we’ve covered as part of the Modern Intermediate Calibers series, some patterns begin to emerge. We see that larger rounds with heavier bullets weigh more, and have more recoil, that more slender bullets shoot further for their [Read More…]
Since we’ve covered the two most prominent PDW rounds of today, I want to take a quick detour and look at an interesting – but obscure – personal defense weapon/assault rifle round from history. After World War II, the apparati of the German war [Read More…]
If the 5.7x28mm FN is the first successful modern PDW round, then the 4.6x30mm HK is the second, and its biggest rival. German firm Heckler and developed the microcaliber 4.6mm in the 1990s as a response to a NATO solicitation for a Personal Defense Weapon, to which [Read More…]
At this point, we’ve talked about 25 different intermediate and full power calibers as part of a series comparing different types of modern small arms ammunition. However, one subject not yet thoroughly covered is rounds for personal defense weapons (PDWs). These [Read More…]
Does the World need another Ballistics App? The finnish company Lapua thinks so, and considering how good the finns are at apps maybe it’s worth a look? I mean, if you ever played any of the Angry Bird apps, you know there’s a lot of ballistics involved as [Read More…]
Today we’ll be looking at a round with one of the strangest-looking projectiles ever designed for a military weapon: The joint Heckler & Koch-CETME 4.6x36mm round designed for the HK36 en-bloc clip fed assault rifle. The rifle was, as the name suggests, [Read More…]
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