kinetic energy scales with the square of velocity.
110 grains has 2x the energy of 55 grains at the same velocity.
But the difference between 1500 fps and 3000 fps is an increase in energy of 4x.
Speed matters more than mass.
Momentum only scales directly with mass and velocity though. A heavier bullet of equal kinetic energy will have significantly more momentum and penetrate significantly more than a light bullet of the same sectional density and kinetic energy. So when selecting ammo depending on your target don't always discount a slower heavier bullet. But yeah. 5.56 is gnarly because of certain characteristics it exhibits at sufficient speed.
It's not the penetration that causes the damage as it is generally sufficient in all cases. The velocity is an exponential contrubutor to energy. e=mass * velocity**2 The resulting hydrostaic shock creates significant wound cavity expansion and tissue damage. Then the bullet yaws and keeps going.
Momentum does almost nothing for stopping power let alone penetration https://www.thefirearmblog.com/blog/2016/05/01/does-momentum-equal-stopping-power-lets-find-out/
It’s why 9 routinely gets more gel inches than 45 and tokarev more than both. Kinetic energy
Not OP.. Is all energy equal? I imagine no, but is there maybe an optimal velocity to mass ratio for a given energy, or is velocity always king? Imagine I quadrupled the mass of a 62gr m855 and halved the velocity. What then in terms of terminal ballistics?
Same energy but you're effectively describing a hot .44 mag load there anon, so, yeah. That's what it'd do.
Won't disintegrate into 10+ fragments and cause inelastic wound channels, will blow up watermelons
And what if caliber remains the same, for a super high sectional density bullet that virtually doesn’t slow down when it hits tissue, like a 44 mag does?
(I know 248gr .224 is impossible, just tryna keep as much as possible constant)
as you get close to 4000 fps the rifling wears out way too fast, like a couple thousand rounds. so to get more power you either burn out your barrels with velocity or add mass and get battle rifle weight and recoil. 5.56 is really the best do all rifle cartridge, lightweight, low recoil, flat shooting, and can blow half a garden gnome's arm off. short barrel fags need not reply, it's not the cartridge's fault you chose a cucked length
>Why don't we make a smaller bullet that moves faster?
In addition to this anon
https://i.imgur.com/6GOLc8g.png
as you get close to 4000 fps the rifling wears out way too fast, like a couple thousand rounds. so to get more power you either burn out your barrels with velocity or add mass and get battle rifle weight and recoil. 5.56 is really the best do all rifle cartridge, lightweight, low recoil, flat shooting, and can blow half a garden gnome's arm off. short barrel fags need not reply, it's not the cartridge's fault you chose a cucked length
, you start to run into genuine issues with the simple lack of bullet mass. Necked down 17-5.56 (a 5.56 cartridge necked down to a 17 caliber bullet) can get blazing fast speeds of around 4500 FPS. Wildcatters have been doing it for years. Here's the issue: You're reaching this speed with a 15 grain bullet. That's a REALLY small bullet. You start to run into problems where the bullet simply obliterates itself on the target, leaving a gnarly 2.5 inch deep wound that simply isn't sufficient for defense against things like humans. Oh, and god forbid a barrier of any type is in the way. It just becomes a niche small-varmint-only round that has 0 wind resistance and wholly inadequate penetration against larger threats.
>A Mach 4 super small bullet won't kill
I have heard of this legendary "varmint effect" for my entire life but never seen a single case where it was demonstrated.
I've seen super high velocity rounds north of 4000fps that were largely hollow specifically designed as expanding varmint rounds create wound cavities in gel that were nearly as wide as they are deep, but that depth was more like five or six inches than two or three. Penetration standards go out the window when you're talking about scooping an entire grapefruit out of a target.
overhyped cartridge, im not saying its bad or it is unusable in military standars or that .308 is superior in every aspect or any other fudding shit alike but it is still overselling its capabilities as people tend to see it as universal solution when its not
>Pretty crazy how much damage a 5.56 can do when it's "just" a .22 but moving at like 3,000ft/s lol
Wait till you learn about .17Remington or .220 Swift.
>Me watching people during the Rittenhouse trial coming back to the realization of “DAAAMN, 5.56 DOES THAT OUT OF A 20IN BARREL?!?!”
Rifle-length gang we just keep winning
I think that SBR and SBS laws mindfucked gun owners.
They're obsessed with getting the smallest barrel legally possible. Don't they realize that a longer barrel makes the gun shooter better in nearly every regard? They do realize that, but they're compelled to skirt around those stupid laws just because they exist.
Anyway, disband the ATF and overturn the NFA. 20 and 24 inch barrels will still be best for 5.56.
It is a "22" in the sense that the bullets have the same diameter, but the cartridge and length of the 5.56 is far greater. It is a very deadly cartridge.
It is basically like a beefed up 22 on steroids, which is fine for killin turrists (that's what it's made for), but lacks the range, kinetic energy, and armor piercing capability of a fully powered cartridge for armored conventional foreign powers.
Now some say the 5.56 is lighter, but they are still upgrading to the slightly stronger 6.8 for future near-peer conflicts. No doubt for the kinetic power and armor piercing capability. The 6.8 is not too heavy, it's still lighter than the fully powered 7.62x51 and the old tried and true 30-06 from both world wars. It's heavier than the 5.56 but not too heavy
Put me in the field with a man who wants to kill me, and of course I would want to be equipped with a stronger rifle that is better at killing at range and piercing enemy armor. That is to just be equipped with a better weapon, to be deadlier at a further range and more easily penetrate body armor.
Maybe some fellas need a lighter rifle cause they got no upper body strength and they got no grit and got them NOODLE ARMS and need BIG MONEY UNCLE FANCY to gently carry their hands into the UNFORGIVING FIELDS OF WAR.
>made for defeatin commies >didn't defeat commies >made for defeatin terrorists >didn't defest terrorists >OH that's because it was really made for defeatin varmints, not humans
AR >Pulse nightclub shooting, Sig MCX 5.56: 49 killed, 53 wounded >Aurora theater shooting, M&P AR: 12 deaths, 58 gunfire injuries >San Bernardino shooting, DPMS AR: 16 dead, 24 injured >Midland shooting, Anderson AR: 8 death, 25 injured >Poway Synagogue shooting, M&P AR: 1 death, 3 wounded >Dayton school shooting, AR pistol: 9 dead, 17 wounded >Vegas hotel shooting, mostly 14 different .223 caliber ARs: 58 dead, 413 wounded by gunfire (800+ trample injuries)
153 kills:593 wounded
746 total hit, 153 total killed: 20% success rate
AK >El Paso Walmart shooting, WASR 10 AK: 23 dead, 23 wounded >Le Carillon/Le Petit Cambodge restaurant shooting, Zastava M70 AK: 15 dead, 12 wounded >La Casa Nostra restaurant shooting, Zastava M70: 5 dead, 8 wounded >La Belle Equipe restaurant shooting, Zastava M70: 28 dead, 0 wounded >Bataclan theater massacre, Zastava M70s and TATP belts: 89 dead by gunfire, 32 wounded by gunfire, 60+ wounded by explosives + trampling (explosives only killed the attackers when detonated)
160 kills:75 wounded
235 total hit, 160 total killed: 68% success rate
The AR only kills humans 1/5 of the time, the AK kills over triple that at nearly 7/10 times per real world data. That's why they call it the AK because you just say ACK and die, whereas with the AR people look at their attacker and go ARR YOU SERIOUS?
Also, another reason the Vegas shooting doesn’t count is that the shootings were truly random. Not like in other shootings where the shooter is taking aim and firing multiple times at a person, going back to make sure they’re dead etc. such was the case in the Christchurch shooting, which I noticed you omitted.
Unrelated to terminal effects but in the grand scheme of things, it’s important to consider cartridge weight, how many rounds one can carry, and the hit probability.
Vegas one was with a m249 SAW, same caliber though. The reason so little brass was found, was because the feds had to sweep up the links and got lazy with separating them
Not how either of those things work
7.62 destabilizes because the tail end of the projectile is a lot heavier and it basically never enters with perfectly even force, so it flops out to one side. 5.56 fragments at high velocities. mk262 is 5.56 with bullets specifically designed to flop because they have heavy tails and light (open tipped, hollow) tips, so they keep their method of lethality beyond where they drop below the velocity threshold to fragment, which is why they use them at those longer ranges for DMR things.
the 5.56 is a good caliber but it just seems almost a little wasteful and off brand for most uses other than war.
i see people shitting on 5.56 penetration power but it does damn well for and intermediate .22. its penetration I'd say is what make it so deadly between for being so small and fast at close ranges and to slow and light at 200-ish m+.
the real problem is it zips right through anything that isn't armored witch means that 1000+ foot pounds is more like 300 or 400 and at longer ranges its inaccurate and loses a lot of velocity so its still not even getting the full benefit of that energy. can't even bump up the twist rate to increase accuracy and energy transfer at close range cause it will shred the barrel and or the bullet. its why i genuinely be leave the 300blk is a better intermediate cartridge for most civilian uses and i still wonder why police forces haven't swapped to it.
>300aac
way more versatility, way more projectile options.
dumps way more energy into target.
better performance at more ranges
only real problem is that a lot of 300 aac ammo brands is under powered for its wait il see 150 grain on box at 1800fps and shooting closer to 1600 when good 300aac at the 150 grain claims and shoots around 2000fps
okay thanks, great thread, hope you get that feeling of friendship and socialization you were searching for
Brown person, if you dont like guns there are many places on the internet where you can talk about sports you don't play or cruise for gay anal sex.
He's a pajeet who wants more Ukraine threads so he can spout about how "great" Russia is doing.
"Its just a carbine caliber".
>mow down 49 fags.
It made me a bit upset when I learned it wasn’t 300 blackout. Was excited for real world data on performance.
kinetic energy scales with the square of velocity.
110 grains has 2x the energy of 55 grains at the same velocity.
But the difference between 1500 fps and 3000 fps is an increase in energy of 4x.
Speed matters more than mass.
look up the mind bending damage a rogue paint chip in orbit can do.
Momentum only scales directly with mass and velocity though. A heavier bullet of equal kinetic energy will have significantly more momentum and penetrate significantly more than a light bullet of the same sectional density and kinetic energy. So when selecting ammo depending on your target don't always discount a slower heavier bullet. But yeah. 5.56 is gnarly because of certain characteristics it exhibits at sufficient speed.
It's not the penetration that causes the damage as it is generally sufficient in all cases. The velocity is an exponential contrubutor to energy. e=mass * velocity**2 The resulting hydrostaic shock creates significant wound cavity expansion and tissue damage. Then the bullet yaws and keeps going.
Momentum does almost nothing for stopping power let alone penetration https://www.thefirearmblog.com/blog/2016/05/01/does-momentum-equal-stopping-power-lets-find-out/
It’s why 9 routinely gets more gel inches than 45 and tokarev more than both. Kinetic energy
45 has more surface area, and similar KE, why would you expect it to have the same penetration as a smaller projectile?
Yeah, dude. Imagine shooting a grain of sand at 50% the speed of light. I think your house would blow up.
Not OP.. Is all energy equal? I imagine no, but is there maybe an optimal velocity to mass ratio for a given energy, or is velocity always king? Imagine I quadrupled the mass of a 62gr m855 and halved the velocity. What then in terms of terminal ballistics?
Same energy but you're effectively describing a hot .44 mag load there anon, so, yeah. That's what it'd do.
Won't disintegrate into 10+ fragments and cause inelastic wound channels, will blow up watermelons
And what if caliber remains the same, for a super high sectional density bullet that virtually doesn’t slow down when it hits tissue, like a 44 mag does?
(I know 248gr .224 is impossible, just tryna keep as much as possible constant)
>moving at like 3,000ft/s
62gr loads and above aren't without a 24 inch barrel, but improved bullets are less velocity dependent
Why would you ever use a bullet or platform that couldn't hit 3kfps?
What is this, 1850?
So crazy it might just work!
Why don't we make a smaller bullet that moves faster? Or stronger upper receivers for hotter loads?
>Why don't we make a smaller bullet that moves faster
.17 Rem. Winddrift.
as you get close to 4000 fps the rifling wears out way too fast, like a couple thousand rounds. so to get more power you either burn out your barrels with velocity or add mass and get battle rifle weight and recoil. 5.56 is really the best do all rifle cartridge, lightweight, low recoil, flat shooting, and can blow half a garden gnome's arm off. short barrel fags need not reply, it's not the cartridge's fault you chose a cucked length
What barrel lengths aren't cucked?
just be normal and get a 16 or 20". if you catch yourself sounding like pic related, then you're going too short.
>Why don't we make a smaller bullet that moves faster?
In addition to this anon
, you start to run into genuine issues with the simple lack of bullet mass. Necked down 17-5.56 (a 5.56 cartridge necked down to a 17 caliber bullet) can get blazing fast speeds of around 4500 FPS. Wildcatters have been doing it for years. Here's the issue: You're reaching this speed with a 15 grain bullet. That's a REALLY small bullet. You start to run into problems where the bullet simply obliterates itself on the target, leaving a gnarly 2.5 inch deep wound that simply isn't sufficient for defense against things like humans. Oh, and god forbid a barrier of any type is in the way. It just becomes a niche small-varmint-only round that has 0 wind resistance and wholly inadequate penetration against larger threats.
5.56 really is an amazing do-all.
>A Mach 4 super small bullet won't kill
I have heard of this legendary "varmint effect" for my entire life but never seen a single case where it was demonstrated.
I've seen super high velocity rounds north of 4000fps that were largely hollow specifically designed as expanding varmint rounds create wound cavities in gel that were nearly as wide as they are deep, but that depth was more like five or six inches than two or three. Penetration standards go out the window when you're talking about scooping an entire grapefruit out of a target.
>Pretty crazy how much damage a plastic pellet can do can do when it's "just" polycarbonate but moving at like 23,000ft/s lol
this is that a 7 gram plastic projectile does to cast aluminum at 20k FPS
overhyped cartridge, im not saying its bad or it is unusable in military standars or that .308 is superior in every aspect or any other fudding shit alike but it is still overselling its capabilities as people tend to see it as universal solution when its not
Based double poster. Do it again.
is anyone else getting repeating posts?
>Pretty crazy how much damage a 5.56 can do when it's "just" a .22 but moving at like 3,000ft/s lol
Wait till you learn about .17Remington or .220 Swift.
220 swift gets booty blasted in the speed department by real big boy tiny wildcats.
such as? The .22 Eargesplitten loudenboomer?
.220 swift slings them at 4750fps, that's nothing to sneeze at.
This is what a 0.07 pellet does at ~22,000 fts.
https://hvit.jsc.nasa.gov/impact-videos/steel-orbital-debris-impact-test.html
Great now do that shit at surface-level atmospheric pressure.
>Me watching people during the Rittenhouse trial coming back to the realization of “DAAAMN, 5.56 DOES THAT OUT OF A 20IN BARREL?!?!”
Rifle-length gang we just keep winning
i think it was only 16", even better
I think that SBR and SBS laws mindfucked gun owners.
They're obsessed with getting the smallest barrel legally possible. Don't they realize that a longer barrel makes the gun shooter better in nearly every regard? They do realize that, but they're compelled to skirt around those stupid laws just because they exist.
Anyway, disband the ATF and overturn the NFA. 20 and 24 inch barrels will still be best for 5.56.
>I know a guy
Brandon's plan isn't to win, it's to scare the incumbent straight. He explicitly stated he doesn't want to run again if somehow victorious
Eh, it's sort of wanting what you can't have, but also more and more new gun owners living in more and more urban areas
Imagine what a .063 can do moving at 5000ft/s can do. lol
Velocity is an exponential force multiplier versus mass
Do you really want to be hit by a 10ton projectile going 10ft per second?
We get it dude, everyone's already been to your mother's house.
Fat guy knocking you down, not incapacitated
7g projectile at 1700fps= incapacitated, killed or crippled
Fatso has way more momentum but negligible stopping power. Why?
It is a "22" in the sense that the bullets have the same diameter, but the cartridge and length of the 5.56 is far greater. It is a very deadly cartridge.
It is basically like a beefed up 22 on steroids, which is fine for killin turrists (that's what it's made for), but lacks the range, kinetic energy, and armor piercing capability of a fully powered cartridge for armored conventional foreign powers.
Now some say the 5.56 is lighter, but they are still upgrading to the slightly stronger 6.8 for future near-peer conflicts. No doubt for the kinetic power and armor piercing capability. The 6.8 is not too heavy, it's still lighter than the fully powered 7.62x51 and the old tried and true 30-06 from both world wars. It's heavier than the 5.56 but not too heavy
Put me in the field with a man who wants to kill me, and of course I would want to be equipped with a stronger rifle that is better at killing at range and piercing enemy armor. That is to just be equipped with a better weapon, to be deadlier at a further range and more easily penetrate body armor.
Maybe some fellas need a lighter rifle cause they got no upper body strength and they got no grit and got them NOODLE ARMS and need BIG MONEY UNCLE FANCY to gently carry their hands into the UNFORGIVING FIELDS OF WAR.
>made for defeatin commies
>didn't defeat commies
>made for defeatin terrorists
>didn't defest terrorists
>OH that's because it was really made for defeatin varmints, not humans
They swapped the calibers to make 5.56 seem strong and 7.62x39 seem weak right? This has to be a troll image no way 5.56 does that.
video game balance is a lie anon
7.62x39 fmj icepicks pretty bad. I would like to see what the premo hollow points can do.
Today I will remind them.
AR
>Pulse nightclub shooting, Sig MCX 5.56: 49 killed, 53 wounded
>Aurora theater shooting, M&P AR: 12 deaths, 58 gunfire injuries
>San Bernardino shooting, DPMS AR: 16 dead, 24 injured
>Midland shooting, Anderson AR: 8 death, 25 injured
>Poway Synagogue shooting, M&P AR: 1 death, 3 wounded
>Dayton school shooting, AR pistol: 9 dead, 17 wounded
>Vegas hotel shooting, mostly 14 different .223 caliber ARs: 58 dead, 413 wounded by gunfire (800+ trample injuries)
153 kills:593 wounded
746 total hit, 153 total killed: 20% success rate
AK
>El Paso Walmart shooting, WASR 10 AK: 23 dead, 23 wounded
>Le Carillon/Le Petit Cambodge restaurant shooting, Zastava M70 AK: 15 dead, 12 wounded
>La Casa Nostra restaurant shooting, Zastava M70: 5 dead, 8 wounded
>La Belle Equipe restaurant shooting, Zastava M70: 28 dead, 0 wounded
>Bataclan theater massacre, Zastava M70s and TATP belts: 89 dead by gunfire, 32 wounded by gunfire, 60+ wounded by explosives + trampling (explosives only killed the attackers when detonated)
160 kills:75 wounded
235 total hit, 160 total killed: 68% success rate
The AR only kills humans 1/5 of the time, the AK kills over triple that at nearly 7/10 times per real world data. That's why they call it the AK because you just say ACK and die, whereas with the AR people look at their attacker and go ARR YOU SERIOUS?
>That's why they call it the AK because you just say ACK and die, whereas with the AR people look at their attacker and go ARR YOU SERIOUS?
Kek’d
Is it fair to use the Vegas shooting as part of the sample? Everyone there was shot from 100s of yards away.
Also, another reason the Vegas shooting doesn’t count is that the shootings were truly random. Not like in other shootings where the shooter is taking aim and firing multiple times at a person, going back to make sure they’re dead etc. such was the case in the Christchurch shooting, which I noticed you omitted.
Unrelated to terminal effects but in the grand scheme of things, it’s important to consider cartridge weight, how many rounds one can carry, and the hit probability.
Vegas one was with a m249 SAW, same caliber though. The reason so little brass was found, was because the feds had to sweep up the links and got lazy with separating them
>That's why they call it the AK because you just say ACK and die
ak chads, i kneel.
it looses its magic powers in a farely short distance
The smaller the rifle rounds are more lightly to turn sideways when hitting soft flesh instead of going straight through.
Not how either of those things work
7.62 destabilizes because the tail end of the projectile is a lot heavier and it basically never enters with perfectly even force, so it flops out to one side. 5.56 fragments at high velocities. mk262 is 5.56 with bullets specifically designed to flop because they have heavy tails and light (open tipped, hollow) tips, so they keep their method of lethality beyond where they drop below the velocity threshold to fragment, which is why they use them at those longer ranges for DMR things.
the 5.56 is a good caliber but it just seems almost a little wasteful and off brand for most uses other than war.
i see people shitting on 5.56 penetration power but it does damn well for and intermediate .22. its penetration I'd say is what make it so deadly between for being so small and fast at close ranges and to slow and light at 200-ish m+.
the real problem is it zips right through anything that isn't armored witch means that 1000+ foot pounds is more like 300 or 400 and at longer ranges its inaccurate and loses a lot of velocity so its still not even getting the full benefit of that energy. can't even bump up the twist rate to increase accuracy and energy transfer at close range cause it will shred the barrel and or the bullet. its why i genuinely be leave the 300blk is a better intermediate cartridge for most civilian uses and i still wonder why police forces haven't swapped to it.
>300aac
way more versatility, way more projectile options.
dumps way more energy into target.
better performance at more ranges
only real problem is that a lot of 300 aac ammo brands is under powered for its wait il see 150 grain on box at 1800fps and shooting closer to 1600 when good 300aac at the 150 grain claims and shoots around 2000fps