"Seismic Ammo" 185gr 9mm

[jellydonut]

https://www.recoilweb.com/seismic-disturbance-145326.html

Snake oil or interesting development?

The strange looking cases are a combination of anodized aluminium and stainless steel, presumably due to the pressure? https://seismicammo.com/images/Seismic_Sellsheet_back.JPG

[MichaelD]

I pretty much assume that anyone who talks about "knockdown power" in their ad copy is selling snake oil.

[BehindBlueI's]

boasting that their 9mm load boasted momentum to rival some .45 Auto loads

It would need to be roughly 1050 fps to match a 230 gr projectile at 850 fps if my math checks out. (Momentum = velocity x mass) but since they never actually say what .45 Auto load they are equating it to, who knows?

I'm skeptical, but we'll see.

[TiroFijo]

Pure unadulterated BS...

[GyroF-16]

I don’t find momentum terribly useful when thinking about ballistics.
I’m more interested in kinetic energy: mass x velocity SQUARED. So the velocity is a pretty important (and as yet, unspecified) quantity.

[WDR]

I don’t find momentum terribly useful when thinking about ballistics.
I’m more interested in kinetic energy: mass x velocity SQUARED. So the velocity is a pretty important (and as yet, unspecified) quantity.


I really don't give a crap about some number that may or may not mean anything. I do care about what the bullet actually does when it hits something. All that said... I heard someone quote 950fps for this load.

Seems to me like someone is bound and determined to re-invent the 200gr "Super Police" .38 Special load ... in a 9x19 automatic pistol. With drastically high pressures (beyond +P for sure, if the 950fps figure is true) I'm sure, even with the "hybrid" casing.

Why someone would want that, I don't know.

[GyroF-16]

I don’t find momentum terribly useful when thinking about ballistics.
I’m more interested in kinetic energy: mass x velocity SQUARED. So the velocity is a pretty important (and as yet, unspecified) quantity.

In reviewing my post, I noticed that an element was lost as I typed the equation

Kinetic energy is 1/2 mass x velocity squared.

The “velocity squared” part was my point, but didn’t want to omit the 1/2 part.

This means that an object moving twice as fast an another has FOUR TIMES as much energy.

[LOKNLOD]

Momentum is pretty important if you're slapping down relatively small steel plates.

The difference in momentum and its impact (pun intended) on performance when the target is a 250lb lump of flesh in dynamic motion is pretty meaningless.

[10mmfanboy]

I don't see how that would be effective at all. Best I could get out of a 180 gn fp in a .40 s&w was just over a 1000 fps with a 6" barrel. They weren't a pleasure to shoot either.

[BehindBlueI's]

I don’t find momentum terribly useful when thinking about ballistics.
I’m more interested in kinetic energy: mass x velocity SQUARED. So the velocity is a pretty important (and as yet, unspecified) quantity.

I honestly don't find either to be particularly relevant. High kinetic energy is how we got the super light/super fast projectiles that have insufficient penetration, fragment early, and perform horribly in intermediate barriers. The gimmick ammo Liberty Civil Defense claims 444 ft-lbs with their 50gr 9mm. 147gr HST is 326 ft-lbs. I know which one works better.

[Lester Polfus]

The only real use I can see for something like this is some kind of uber-deep penetrator round for carrying a 9mm in bear country. But since it's obviously some kind of hollow point projectile, that's clearly not what they have in mind.

When a major law enforcement agency decides it's a good idea, I'll start paying attention.

[Drang]

https://www.recoilweb.com/seismic-disturbance-145326.html

Snake oil or interesting development?

The strange looking cases are a combination of anodized aluminium and stainless steel, presumably due to the pressure?

I imagine that's why Tamara said they'll be checking further into it...

[Hambo]

I was loading 150gr Bayou SWCs for about a year and IIRC they were about 950fps. The OAL was as long as would still function in a 92F, and there wasn't room for anything else in the case without compressing powder.

I'm skeptical of these 185s because: SHOT Show, physics, and anything with hyperbole in the name is usually bullshit.

[mtnbkr]

The only real use I can see for something like this is some kind of uber-deep penetrator round for carrying a 9mm in bear country. But since it's obviously some kind of hollow point projectile, that's clearly not what they have in mind.

When a major law enforcement agency decides it's a good idea, I'll start paying attention.
But for 9mm in bear country, we have the Underwood Extreme Penetrator (vaguely porn-y sounding name) based on GJM's testing.


anything with hyperbole in the name is usually bullshit.
Pretty much my take on it as well.

Chris

[DocGKR]

"I really don't give a crap about some number that may or may not mean anything. I do care about what the bullet actually does when it hits something."

Very much this.

As well as the following:

"The gimmick ammo Liberty Civil Defense claims 444 ft-lbs with their 50gr 9mm. 147gr HST is 326 ft-lbs. I know which one works better."

[Sal Picante]

I was loading 150gr Bayou SWCs for about a year and IIRC they were about 950fps. The OAL was as long as would still function in a 92F, and there wasn't room for anything else in the case without compressing powder.

I'm skeptical of these 185s because: SHOT Show, physics, and anything with hyperbole in the name is usually bullshit.

I've shot a bit of SNS 160gr (https://www.snscasting.com/9mm-38-super-160-grain-round-nose-coated-500ct/) when they first came out.

Some of the PCC crowd dug it, they could run some sort of light spring, IDK/IDGAF. In the 92 they fed well, shot soft (tho, not noticeably softer than 147's that made power factor) and were horribly inaccurate.

I think they ironed out some of the sizing/shape of the 160, but IDK/IDGAF...

The stuff mentioned in the article, tho? I'm just going to say: At least Tam gets a free trip to shoot other people's ammo. Good for her!

[RJ]

When @Doc_GKR decides it's a good idea, I'll start paying attention.

FIFY :)

[randyho]

For this group, this isn't good marketing. Most people aren't this group.

I'm curious as to what will come out of the closer looks.

[Balisong]

I'm also very skeptical, but always interested in gel results.

I would also say it's not exactly confidence-inspiring on the safety aspect of the cartridge (from a pressure standpoint) when they only demo it in PCCs and the most durable pistol made....

[Tokarev]

Where we at a year and a half later?

I see this from Costa for whatever it is worth. Still wondering how it might work through auto glass or sheet metal. Maybe I need to buy a couple boxes and try it for myself.

https://youtu.be/oZwJMCUXCJI

Sent from my SM-A505U using Tapatalk

[WDR]

I see this from Costa for whatever it is worth.


I don't have the hate for Costa that some folks do, but I do have a very hard time taking him seriously anymore. The video above is all talk, and zero substance.

[Navin Johnson]

Where we at a year and a half later?

I see this from Costa for whatever it is worth. Still wondering how it might work through auto glass or sheet metal. Maybe I need to buy a couple boxes and try it for myself.

https://youtu.be/oZwJMCUXCJI

Sent from my SM-A505U using Tapatalk

Or......for what it costs it would be the equivalent of a 20% to 25% discount on a 500 round case of well-known and well vetted ammunition.