Testing the FK BRNO 7.5K PSD

WHAT IF YOU COULD wield the firepower of a rifle in your handgun? That’s what FK BRNO set out to accomplish when they designed the 7.5 FK cartridge. To fill the void between 9mm and 5.56mm for combat engagements from 50 to 150 yards, FK designed a 95 grain 7.5 caliber round that would zip through the air at 2,000 FPS with impressive ballistic results.

FK BRNO has developed and patented a “Dynamic Shock Index” formula for measuring the efficacy of handgun cartridges. To this author, it seems to be a mathematical equivalent to the age-old cliché “knock down power.”

To the skeptic it might look like a marketing ploy to award the highest number to the designer. However, my doubt was removed when I watched the video posted on the FKBRNO website of numerous single-shot drops of 400-pound boars. FK BRNO claims the 7.5 FK round has similar penetration and wound cavities as a .30 caliber rifle. So obviously, with such power it would also be an amazing defensive weapon.

The 7.5 FK cartridge itself looks like a necked-down 10mm round, although the casing is longer. There are three different bullets available. The F9 is all copper with a wide, flat nose designed to hunt medium game up to 300 pounds within 100 yards and dangerous game up to 500 pounds within 50 yards.

The S95 is a Sierra-manufactured, jacketed hollow point designed to explode and shatter on medium game up to 100 pounds within 100 yards.

The F5 copper monolithic nose-discarding hollow point I tested is accurate and effective for defense and game up to 200 pounds within 100 yards.

Prices range by load from $1.20 to $1.50 per round. However, don’t discount the entire system because of the price of ammo. Remember, the PSD handgun is multi-caliber capable.

The FK PSD (Police, Sport, Defense) pistol is designed to shoot 7.5FK, 10mm/.40S&W, or 9mm ammunition. Within just a few seconds you can convert it to the caliber of your choice. For 10mm/.40 S&W you need only to swap the barrel.

In fact, I staggered 40 S&W and 10mm rounds in the same magazine and it fired flawlessly. However, the magazines normally hold 16 rounds of 7.5FK. but they will only hold 10 rounds of 10mm.

To fire 9mm out of the PSD you swap the barrel, recoil spring and magazine. Either way, in a matter of seconds you have a training pistol that shoots more readily available ammunition.

I was also pleasantly surprised to find that the 10mm only dropped a few inches from my 50 yard 7.5FK zero. In fact, it lined up with the bottom of the Holosun ring reticle for a convenient second zero.

The PSD also has a patented recoil attenuating system that utilizes a five-ounce weight tucked away in the front of the dust cover. Thus, the large, odd shape of the handgun. This helps dampen muzzle flip and perceived recoil since the 7.5FK round can be powerful.

One thing is for sure, when I shoot the 7.5FK it sounds like a rifle going off. The PSD is optics ready for several compatible mounting footprints as well as several different iron sight options, all zeroed for 100 meters. 

The PSD’s single action trigger breaks clean right around five pounds, and the safety locks the hammer as well as the slide. The ergonomics of the textured grip are my only complaint since it feels roughly the same as grabbing a two by four while the sharper edge stabs my palm.

At the range I shot a clean 1.09-inch, five-shot group with the 7.5FK at 25 yards, and four of those rounds were only 0.6 inches apart. Taking it back to 100 yards yielded a 9-inch, five-shot group. Three of those rounds were within 4.5 inches with no noticeable drop from the 25 yard zero.

The only malfunction occurred as an empty case got caught in the ejection port when I shot it without a magazine. Although holster options are still limited, I hope the PSD gains momentum because I’d love to carry it more and get some firsthand experience dropping some medium-sized Texas game with it. The MSRP is $1,650, and you can find out more at https://fkbrnous.com.

 

Email Dustin Ellermann at ContactUs@fishgame.com

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