7.5 FK
Introduced 2014FK Brno Engineering s.r.o.CIP standard
Also known as 7,5 FK: the same cartridge under different names, all of which find this page.
Dimensions and pressure
Generated from the schema, like every specification table on this site, so a figure recorded on this entry cannot be missing from the table.
Identity
- Designed by
- FK Brno Engineering s.r.o.
- Introduced
- 2014
- Production
- not recorded
- Standards body
- C.I.P.
- Case type
- Rimless
- Case shape
- Bottleneck
Dimensions
- Bullet diameter
- 7.8 mm0.3071 insource
Cartridge maximum, dimension G1.
- Bore diameter
- not recorded
- Case length
- 27 mm1.063 insource
Dimension L3.
- Overall length
- 35 mm1.378 insource
Dimension L6.
- Rim diameter
- 10.8 mm0.4252 insource
Dimension R1.
- Neck diameter
- 8.45 mm0.3327 insource
Dimension H2.
- Base diameter
- 10.8 mm0.4252 insource
Dimension P1.
Pressure
- Maximum pressure
- 350 MPa50,763 psisource
Pmax 3500 bar.
- Pressure standard
- C.I.P.
SAAMI and C.I.P. measure pressure differently and their figures are not interchangeable, which is why the body is always named beside the figure.
Loads
Velocity is recorded per barrel length as published. A gun page interpolates between these points and never projects beyond them.
FKB S95 JHP
- Bullet mass
- 6.16 g95.06 grestimated
From the Wikipedia infobox, uncited there.
- Cartridge mass
- not recorded
- Bullet type
- JHP
- G1 BC
- not recorded
- G7 BC
- not recorded
| Barrel | Velocity |
|---|---|
| 152 mm5.984 in | 609.6 m/s2,000 fps |
FKB CFN
- Bullet mass
- 6.54 g100.9 grestimated
From the Wikipedia infobox, uncited there.
- Cartridge mass
- not recorded
- Bullet type
- CFN
- G1 BC
- not recorded
- G7 BC
- not recorded
| Barrel | Velocity |
|---|---|
| 152 mm5.984 in | 594.4 m/s1,950 fps |
Chambered in
Computed from every entry that lists this cartridge. Nothing here is hand-maintained.
No entry on the site is chambered in it yet.
Gallery
Image credit
- Title
- File:7.5 FK.jpg
- Author
- FK Brno Engineering s.r.o.(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:7.5_FK.jpg
Image credit
- Title
- File:7.5 FK types.jpg
- Author
- FK Brno Engineering s.r.o.(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:7.5_FK_types.jpg
Detail
The 7.5 FK is a bottlenecked, rimless centerfire pistol cartridge the Czech firm FK Brno Engineering developed between 2009 and 2014, built with an unusually specific design brief: to let a handgun retain more kinetic energy at 75 to 150 metres than a 9×19mm Parabellum round generates at the muzzle. Reaching that goal meant a longer, higher-pressure cartridge than existing high-capacity service pistols could safely chamber, so FK Brno had to build a dedicated platform around it rather than adapt an existing design.
The cartridge first appeared in the all-steel FK BRNO Field Pistol of 2015, which used a patented recoil-attenuating mechanism to manage the round’s pressure and recoil in a handgun-sized frame; a lighter polymer-framed version, the FK PSD, followed in 2020. Both are multi-calibre designs that can also be configured for more conventional chamberings, with the 7.5 FK as their signature high-performance option.
All dimensional and pressure figures on this page come from C.I.P.’s own published standard for the cartridge and are recorded as verified. The two published bullet loads and their velocities come from Wikipedia’s own uncited infobox rather than a clickable primary source and are recorded as estimated.
References
- 7.5 FK · 1355565287 · read 2026-09-24
- C.I.P. TDCC datasheet — 7,5 FK · 2020-11-10 · read 2026-09-24
Last verified 2026-09-24 · review status: agent-populated