SIGforum
7.5 BRNO PSD

This topic can be found at:
https://sigforum.com/eve/forums/a/tpc/f/430601935/m/9060061184

April 09, 2021, 07:46 PM
Aglifter
7.5 BRNO PSD
Anyone familiar w. these? A few of us are thinking about getting some as S. TX sidearms. (Mostly for shooting pigs, when they pop up while working, at longer distances.)
April 09, 2021, 08:58 PM
12131
Don't know anything about it, but, man, it's one ugly mother.

https://fkbrnous.com/product/p...ulti-caliber-pistol/




Q






April 10, 2021, 12:49 AM
abnmacv
Expensive and very large. Would a 1911 Ruger in 10mm to the trick as well on the hogs?


U.S. Army 11F4P Vietnam 69-70 NRA Life Member
April 10, 2021, 02:00 AM
monoblok
Sort of channels the unfortunate H9, if I squint.


-MG
April 10, 2021, 05:30 AM
Chuck Perry
I've yet to see a bad review on it. Works as designed and the 7.5 offers some impressive ballistics. These come with your choice of a 9mm or 10mm conversion barrel.
April 10, 2021, 09:06 AM
apprentice
Please buy as many as possible. I'm really hoping this cartridge gains a following because it's time for another leap in performance.
I've read that the 30-30 was regarded as high velocity when it was new as well.
April 10, 2021, 10:54 AM
patw
Isn't that the Gene Simmons gun from Runaway? Big Grin That thing looks big but glad to see something different coming from gun companies.
April 10, 2021, 11:57 AM
12131
quote:
Originally posted by monoblok:
Sort of channels the unfortunate H9, if I squint.

Reminds me of this creature. LOL.




Q






April 10, 2021, 09:33 PM
Anubismp
quote:
Originally posted by patw:
Isn't that the Gene Simmons gun from Runaway? Big Grin That thing looks big but glad to see something different coming from gun companies.


Ha! There's a blast from the past. I could use it to smoke those robot spiders. Those things scared the crap out of me.
April 10, 2021, 09:35 PM
Anubismp
On a more serious note I was enjoying the review I watched on it and it's more than a bit interesting. The newer price is certainly slightly less ridiculous and if you think of it as a multi cal CZ then it's in the ballpark. Not sure it will replace my G20 though if I'm honest.
April 12, 2021, 01:33 AM
nojoy
I have one. Feels great in the hand. Build quality is similar to an HK Mk23. The 7.5 round is very loud. Not a gun to shoot without hearing protection. Recoil similar to a 9mm. Very soft.
The current sights I have on this pistol are good for 25 yards. Any longer distance would be difficult. But you can change them out easily
My gun also came with a 10mm barrel. It will shoot 40 S&W too. I have not shot 10mm out of it yet, due to 10mm availability.
The 7.5 ammo is available, but I order it online.
I’m not aware of a place that sells this ammo except the online store.


https://fkbrnous.com/fk-brno-ammo/
April 12, 2021, 10:06 AM
Gibb
So is this basically a souped up 375sig round?

The 357sig being based on the .40s&w case, but this being based off the 10mm instead?

Looking at the ballistics press on it, looks like the 90gr round gets an extra 100fps and 50ft/lbs over the .357sig.

Is that worth investing in a new gun/round/manufacturer?

Honestly asking the questions, I like seeing innovations. I'm just trying to fully understand it.




I shall respect you until you open your mouth, from that point on, you must earn it yourself.
April 12, 2021, 11:05 AM
tulsamal
It's a very well made gun. One side picture alone doesn't do it justice. It's not bad looking at all. The high end version is actually nice looking... but the price makes me wince. The poly version at $14-$1500 gets me interested. And the new cartridge has some serious punch. And you can swap parts around and have a really nice low recoil 10mm or a no recoil 9mm.

We are started to get pigs on our property here in NE Oklahoma. I can see the attraction for this gun for them... for sure!


____________________________

"Hope" is the thing with feathers -
That perches in the soul -
April 12, 2021, 11:11 AM
tulsamal
No, it's not a necked down 10mm.

And the rated pressures are way up there for any pistol round... big time!

>Contrary to some published information, this cartridge is not based on a necked down 10mm auto case, and hand loaders cannot and should not attempt to make a 7.5 case from a 10mm auto case, as the case is longer, thicker, and operates at significantly higher pressure. Therefore, necking down and stretching the 10mm auto would create much thinner walls at the critical shoulder/neck area and can potentially be very dangerous to the user.

>According to C.I.P rulings, the 7.5 FK case can handle up to 350 MPa (50,763 psi) piezo pressure. In C.I.P regulated countries every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P pressure to certify for sale to consumers.

https://en.wikipedia.org/wiki/7.5_FK

And I don't know where you got those velocity numbers. I love .357 SIG but it can't come anywhere near this. The .357 SIG was created to give us a 125 grain JHP at 1400 fps. A lot of the factory ammo won't even get us there. The 7.5 FK is rated at or just below 2000 fps with a 95 grain all copper monolithic bullet.

That would work on a pig. Quite a smack.


____________________________

"Hope" is the thing with feathers -
That perches in the soul -
April 12, 2021, 01:31 PM
Belgian Blue
quote:
Originally posted by tulsamal:
No, it's not a necked down 10mm.

And the rated pressures are way up there for any pistol round... big time!

>Contrary to some published information, this cartridge is not based on a necked down 10mm auto case, and hand loaders cannot and should not attempt to make a 7.5 case from a 10mm auto case, as the case is longer, thicker, and operates at significantly higher pressure. Therefore, necking down and stretching the 10mm auto would create much thinner walls at the critical shoulder/neck area and can potentially be very dangerous to the user.

>According to C.I.P rulings, the 7.5 FK case can handle up to 350 MPa (50,763 psi) piezo pressure. In C.I.P regulated countries every pistol cartridge combo has to be proofed at 130% of this maximum C.I.P pressure to certify for sale to consumers.

https://en.wikipedia.org/wiki/7.5_FK

And I don't know where you got those velocity numbers. I love .357 SIG but it can't come anywhere near this. The .357 SIG was created to give us a 125 grain JHP at 1400 fps. A lot of the factory ammo won't even get us there. The 7.5 FK is rated at or just below 2000 fps with a 95 grain all copper monolithic bullet.

That would work on a pig. Quite a smack.


That's interesting. I suppose that would eliminate a Glock 20 conversion, although there is the 9x25 Dillon.
April 12, 2021, 01:46 PM
Gibb
quote:
Originally posted by tulsamal:
No, it's not a necked down 10mm.

...

And I don't know where you got those velocity numbers. I love .357 SIG but it can't come anywhere near this. The .357 SIG was created to give us a 125 grain JHP at 1400 fps. A lot of the factory ammo won't even get us there. The 7.5 FK is rated at or just below 2000 fps with a 95 grain all copper monolithic bullet.

That would work on a pig. Quite a smack.


Thank you for the info, I was just trying to understand it.
As for my 357sig comparison, I looked at the 90gr offerings to try and make it an apples-to-apples comparison.

Grizzly makes a 90gr 357sig @ 1900fps
https://www.grizzlycartridge.c...ol/357-sig-90gr-jhp/

Underwood has an all copper round at 1700fps
https://www.underwoodammo.com/...xtreme-defender.html




I shall respect you until you open your mouth, from that point on, you must earn it yourself.
April 12, 2021, 03:17 PM
HRK
Well, it does Czech a lot of Boxes
April 13, 2021, 10:56 AM
jhe888
Interesting. The normal pistol rounds don't offer much, but the 7.5 does fill a box that wasn't filled before.




The fish is mute, expressionless. The fish doesn't think because the fish knows everything.
April 14, 2021, 06:26 PM
bac1023
They are actually very well made pistols. As for its looks, its a polymer framed pistol. I don't think its looks too bad by those standards and its a lot nicer looking than some of the polymer stuff Sig has produced over the past five years. Not to mention much higher quality.

As for the round, I clocked the 95 grain bullet at a 5-shot average speed of 2119 fps out of my Field Pistol, which is about 950 ft/lbs of energy. Considering the amount of damage and penetration the round puts on target, its extremely impressive. Plus its accurate out to 150 yards or more.

My PSD came with the 9mm conversion barrel, springs, and magazines.




















Here it is with its (much) more expensive sibling...


April 14, 2021, 06:43 PM
bac1023
quote:
Originally posted by Aglifter:
Anyone familiar w. these? A few of us are thinking about getting some as S. TX sidearms. (Mostly for shooting pigs, when they pop up while working, at longer distances.)

The round is incredible.

The only drawback is the weight. Despite the polymer frame, it weighs over 45oz with an empty magazine.