What is the smallest centerfire cartridge?

[Pete D.]

5.7X28.....you get .22 magnum RIFLE ballistics from a pistol.

 

[Bbear]

.10 Eichelburger Dart - 25 auto necked down to .1 caliber. At least, according to Ammoguide => http://ammoguide.com/cgi-bin/ai.cgi?sn=BEcNVEWrfF&catid=318

 

[Panzerschwein]

.10 Eichelburger Dart - 25 auto necked down to .1 caliber. At least, according to Ammoguide => http://ammoguide.com/cgi-bin/ai.cgi?sn=BEcNVEWrfF&catid=318

For what use is this? Strange.

 

[230RN]

.10 Eichelburger Dart - 25 auto necked down to .1 caliber. At least, according to Ammoguide => http://ammoguide.com/cgi-bin/ai.cgi?sn=BEcNVEWrfF&catid=318

Heh. Reminds me of the .11UHV cartridge I "invented" for a story of mine. Reality catches up with science fiction.

Terry, 230RN

 

[zb338]

How about the 17 Hornet for rifles?

Zeke

 

[Acera]

For what use is this? Strange.

This is an good article, an interview with the man himself.


http://www.saubier.com/smallcaliber/eichelbergerinterview.html




.

 

[mjsdwash]

25 acp smallest commercial

 

[Acera]

25 acp smallest commercial

I guess it depends on what you consider 'smallest', this one is a commercial pistol round that is smaller.
http://www.ammo-one.com/545x18mm.html


Wikki claims that this is the smallest commercially made centerfire round.
https://en.wikipedia.org/wiki/2mm_Kolibri



.

 

[morcey2]

For what use is this? Strange.

Whitetails. They're not nearly as tough as mule deer.

 

[Panzerschwein]

Whitetails. They're not nearly as tough as mule deer.

Would it be possible to neck a 40x311mmR Bofors case down to .10 caliber? If so, what would the ballistics be?

 

[ironworkerwill]

OK, there is always this one guy that has a story about this one guy.....

Anyway the LGS has a really tiny wildcat round under the glass, it's a .08 cal wildcat and it functioned! Then the same guy made a .06 cal! I don't know where he got the barrels or the bullets. I assume he used theTC Encore as a platform.

After speaking with the LGS owner, I learned he was a bit if a recluse. I found an article about him a few years ago and I just recently tried to find the article again, pooof, nothing. Jasper Alabama or there abouts is the place.

If I come across the article again I'll Post a link. Or if anyone else finds it please provide us with the link.

I'm sure, once I die, I'll be remembered as liar instead of a legend.

 

[ironworkerwill]

I did some refined searching and this is all I found.
https://www.google.com/url?sa=t&sou...S1ESfSf_QvLiLl9-w&sig2=Spw3mOLxq1kLfUspiRZW_g

I may have just made this guy a legend...

 

[mjsdwash]

I guess it depends on what you consider 'smallest', this one is a commercial pistol round that is smaller.
http://www.ammo-one.com/545x18mm.html


Wikki claims that this is the smallest commercially made centerfire round.
https://en.wikipedia.org/wiki/2mm_Kolibri



.

I meant currently made. I think those kolibri were gone 90 years ago, and I think that soviet round is a little bigger by size, just a smaller bullet. If you can find kolibri ammo, that would be a neat novelty, I may get a box

 

[I6turbo]

Melvin Johnson got it right with the 5.7mm Johnson.

Hard to believe.

 

[morcey2]

Would it be possible to neck a 40x311mmR Bofors case down to .10 caliber? If so, what would the ballistics be?

I don't know what the ballistics would be but (assuming you could find a powder that's both slow enough and small enough to fit through the neck) I would predict that the throat would last maybe on round. And by throat, I mean almost all of the rifling down the entire length of the barrel. It would give the .22 eargesplitten loudenboomer a run for the money.

Matt

 

[230RN]

.10 Eichelburger Dart - 25 auto necked down to .1 caliber. At least, according to Ammoguide => http://ammoguide.com/cgi-bin/ai.cgi?sn=BEcNVEWrfF&catid=318

Do they make a shot round for that one? Because snakes. And worms. And spiders. I figure a solid hit with a .03oz load of #75 shot would be devastating on suchlike critters.

 

[CapnMac]

I don't know what the ballistics would be but (assuming

Hmm, that's about 50mm diameter by 300mm, about 590 cc. I'm pretty sure 0.6 liters of powder is going to be close to more plasma than propellant gas after necking down to, oh, 5mm bore. The trick might be in how much base the round needs to not melt. Not sure how much chroming the barrel would need to survive, too.

Chrome-lined solid stainless barrel probably would not be bad, but the pig iron needed to support the breech might be an issue