View Full Version : Wonder what would happen to the 7.5 FK in an SMG or carbine...
So this new 7.5 FK BRNO field pistol allegedly does 2000 FPS witha 100gr projectile. I wonder what might be possible with an SMG or carbine.
TED
That I too would like to know. I just stumbled upon this pistol tonight, I have no use for it but it's different and I like that.
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Might be interesting in something larger like an SMG or even rifle. Aside from a lack of sources and thus probably expensive.
In its current 3 lb (seriously...45 oz) CZ-75 knockoff? That's a big fat pass.
http://www.fkbrno.com/en/7-5-fk-system
It looks like the combination of the .30 Carbine (https://en.wikipedia.org/wiki/.30_Carbine) and the .40 S&W (https://en.wikipedia.org/wiki/.40_S%26W)
Same performance as .30 carbine in a 1/4" shorter package.
Looks steampunk as hell. I dig it.
http://personal.visualitymedia.com/personal/handguns/fk.jpg
http://4.bp.blogspot.com/-8rmDnx-Ht24/VEVilQQ9CYI/AAAAAAAEhtc/yPG65_yStYM/s1600/steampunk_girls_04.jpg
First I've heard of this. Can't wait to see ballistic tests. I think it will have growing pains getting the right bullet construction, but at that size/weight/velocity, I think there is a lot of potential. It may cross over into rifle-like terminal ballistics, we shall see.
So this new 7.5 FK BRNO field pistol allegedly does 2000 FPS witha 100gr projectile. I wonder what might be possible with an SMG or carbine.
TED
Funny I just said the same thing when my buddy showed this gun/ammo to me last night. It's a 16-18".30 carbine performance in a 6-8" barrel length. I said the pistol is like a TRP Operator size but you can't mount a light, so I would pass, but a SBR MPX would be interesting. Just got to get ammo at half the price or less of current levels and reloading dies.
Not even the least bit interested after reading this...
"...proprietary cartridge caliber, with intellectual property rights claimed and registered by FK Brno."
Proprietary cartridges are a dead end. Does anyone remember how popular the 300 Whisper was 20 years ago? 10 years ago?
It's a hell of a PDW round. Maybe in something like a MP7 type of weapon.
So apparently these things are for sale now. I am hearnig $7500 each. $1.50 a round. Wow.
https://luxuryfirearms.com/
What I have heard is that they don't expect to sell many of these. They want others to design and chamber firearms for the round so they can expand sales. interesting.
Not even the least bit interested after reading this...
"...proprietary cartridge caliber, with intellectual property rights claimed and registered by FK Brno."
Proprietary cartridges are a dead end. Does anyone remember how popular the 300 Whisper was 20 years ago? 10 years ago?
They can be good or bad depending on how the intellectual property holder administers them.
No, it's always bad for the consumer.
SAAMI requires the name to be free. Without SAAMI it will always remain expensive and hard to find ammo. Without ammo nobody is building guns for it.
No, it's always bad for the consumer.
SAAMI requires the name to be free. Without SAAMI it will always remain expensive and hard to find ammo. Without ammo nobody is building guns for it.
So what are they trying to do then? What's the point?
It may make them some money. Look at SSK, they made enough by themself I guess. But pretty much only handloaders got into it. Ammo availability and price was horrendous, and didn't include the purpose designed bullets we have now.
Sorry for the bump but I find myself wondering about this again. Has anyone heard anything about it?
Brno will allow ammo manufacturers to make it without royalties is what I am hearing.
peterinflorida
12-17-20, 16:35
https://fkbrnous.com/fk-brno-ammo/
The wife wouldn't let me sell my kidney or lung for one:
https://fkbrnous.com/product/7-5-fk-field-pistol/
I was hoping it would come with all barrels but you choose between 9mm and 10mm
https://fkbrnous.com/product/psd-multi-caliber-pistol/
I would take a Glock in that caliber or the Tokarev.
Yes I have seen those but this thread is about whether anyone is yet contemplating or in the process of making a shoulder weapon of some kind chambered in this. SMG/Carbine.
That interests me more than the pistol. unless Glock makes one....
MontanaMarine
12-18-20, 18:24
It would probably add significant velocity.
But, if you look at the 300BO in supersonic format, you're talkin 110gr at 2400+ from 16" barrel. The 7.5FK might be pretty close to the same thing.
I think the point is with a short barrel. SMG sized thing. Not sure full auto would be possible/useful but the point is the size. Another plus is magazine size. You can fit more SMG/stick mags on the same kit space as AR size mags
MontanaMarine
12-19-20, 11:28
Well, the round itself seems really efficient, and I can only imagine it would do very well ballistically speaking, with a bit more barrel.
I was mentally comparing it to the 300BO, where they seem pretty close in shorter barrels.
If you look at the 7.5FK pistol, pushing a 30 cal, 100 gr, 2000 fps....it is almost the ballistic twin of the 30 Carbine in it's 18" barrel, where it sends a 110gr bullet at around 1990 fps.
Granted, the FK pistol is a pistol, and the 30 Carbine is a carbine, so there are significant differences in size, weight, shootability etc.
" so there are significant differences in size, weight, shootability etc."
That's my point. A much smaller, lighter shoulder weapon that hits a lot harder. Maybe I am missing something but I would think this is desirable.
MontanaMarine
12-21-20, 23:22
The ballistics are there on paper.
If it goes mainstream and becomes well supplied and reasonably priced, that would make a nice choice for a PDW type weapon.
For me personally, I have no interest in an expensive boutique chambering.
So back to my original question. Any word on someone actually working on that?
everready73
12-23-20, 08:54
They have one that is $1650 and shoots 7.5k, 10mm, an .40sw
Looks like a barrel change is needed. They also have a brace for it
Not interested personally but always cool to see new stuff
https://fkbrnous.com/product/psd-multi-caliber-pistol/
Yes that's the new pistol. Again, the subject of this thread is whether anyone is making a carbine/smg/shoulder weapon of some kind chambered in this caliber. I am guessing probably not but just wondering.
For a PDW I have long wondered about the .30 carbine round. Would it not make a good sub gun round? Longer range than a pistol caliber [yes I know the .30 is consider a pistol cartridge] and high capacity.
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