Image credit
- Title
- File:Ultima Ratio Commando slovenske vojske.jpg
- Author
- Ministrstvo za obrambo(attribution required)
- Licence
- CC BY 3.0
- Source
- https://commons.wikimedia.org/wiki/File:Ultima_Ratio_Commando_slovenske_vojske.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Inputs
- m9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- v853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 600 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Muzzle velocity is calculated
nearest sourced barrel length, no extrapolation
Inputs
- v at 558.8 mm853 m/s2,799 fpsverifiedsourceBallistics table of the cited article.
Assumptions
- This figure belongs to a 558.8 mm barrel. It is shown because it is the closest measurement that exists, not because it applies here.
1 of 1 inputs link to their source.
How Loaded mass is calculated
m_loaded = m_empty + m_magazine + n · m_cartridge
Not calculated: m_magazine has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- One magazine, filled to the stated capacity. Spare magazines, optics, slings and lights are the owner’s, not the arm’s.
No input on this calculation carries a clickable source yet.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Inputs
- m_firearm7.39 kg16.29 lbestimatedFrom the Wikipedia infobox, uncited there. The Intervention variant, the longest-barrelled of the four covered.
- v_recoil1.099 m/s3.607 fpsestimated
Assumptions
- Propellant gas momentum is excluded: ARMAG does not record charge weights. This is therefore a lower bound on the real free recoil, consistent between entries but smaller than a figure that includes the gas term.
- Free recoil: the arm is unrestrained. Stock design, muzzle devices, stance and shooter mass are not modelled, because none of them is a property of the arm.
No input on this calculation carries a clickable source yet.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity10estimatedFrom the Wikipedia infobox, uncited there: a 5- or 10-round detachable box magazine; 10 is the larger of the two.
No input on this calculation carries a clickable source yet.
Derived figures
Computed from the sourced values above. Open ƒ on any figure for the formula, its inputs, and the assumptions it makes.
How Momentum is calculated
p = m · v
Inputs
- m9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- v853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 600 mm. Velocity outside the sourced range is not projected.
1 of 2 inputs link to their source.
How Sectional density is calculated
SD = mass(gr) / (7000 · diameter(in)²)
Inputs
- mass9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- diameter7.85 mm0.3091 inestimatedsourceNo free dimensional standard publishes the NATO round under that name. Borrowed from the C.I.P. datasheet for the commercial .308 Winchester (G1), which shares the chamber; the two are not interchangeable at the pressure limit.
Assumptions
- Reported in the conventional lb/in² so it is directly comparable with published figures.
2 of 2 inputs link to their source.
How Power factor is calculated
PF = mass(gr) · velocity(fps) / 1000
Inputs
- mass9.525 g147.0 grverifiedsourcePublished as 147 gr; 1 gr = 0.06479891 g exactly.
- velocity853 m/s2,799 fpsverifiedMeasured with a 558.8 mm barrel, not this arm's 600 mm. Velocity outside the sourced range is not projected.
Assumptions
- A competition classification defined by the IPSC and USPSA rulebooks, stated in their units. It describes a scoring category, not an effect.
1 of 2 inputs link to their source.
How Magazine dump is calculated
t = (n − 1) / (rpm / 60)
Not calculated: rpm has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- Cyclic rate held for the whole magazine, no stoppages, trigger held down. A theoretical figure for comparing mechanisms, not a measured one.
No input on this calculation carries a clickable source yet.
How Sight error at 1 mm is calculated
θ = atan(misalignment / sight radius)
Not calculated: sight radius has no sourced figure yet. Nothing is substituted for a missing input.
Assumptions
- Shows what a stated aiming error costs. The misalignment is the reader’s figure; the site does not claim how well anyone aims.
No input on this calculation carries a clickable source yet.
Variants
Commando I
A shorter-barrelled configuration of the Ultima Ratio.
- Mass, empty
- 6.26 kg13.80 lbestimated
From the Wikipedia infobox, uncited there.
- Barrel length
- 550 mm21.65 inestimated
From the Wikipedia infobox, uncited there.
Commando II
The shortest and lightest standard-barrel configuration of the Ultima Ratio.
- Mass, empty
- 6.12 kg13.49 lbestimated
From the Wikipedia infobox, uncited there.
- Barrel length
- 470 mm18.50 inestimated
From the Wikipedia infobox, uncited there.
Integral Silencieux
A configuration with an integrated suppressor in place of the standard barrel and muzzle device.
- Mass, empty
- 7.08 kg15.61 lbestimated
From the Wikipedia infobox, uncited there.
- Barrel length
- 400 mm15.75 inestimated
From the Wikipedia infobox, uncited there.
| Variant | Years | Changes |
|---|---|---|
| Commando I | — | Mass, empty, Barrel length |
| Commando II | — | Mass, empty, Barrel length |
| Integral Silencieux | — | Mass, empty, Barrel length |
Specifications
Every row here is generated from the schema, so a figure recorded on this entry cannot be missing from the table, and the same rows, read the same way, are what the comparison shows.
Identity
- Type
- Rifle
- Action
- Bolt action
- Fire modes
- Single shot
- Operating system
- Manually operated
- Roles
- Designed in
- France
- Produced in
- Introduced
- 2000
- Production
- 2000–present
Dimensions and mass
- Mass, empty
- 7.39 kg16.29 lbestimated
From the Wikipedia infobox, uncited there. The Intervention variant, the longest-barrelled of the four covered.
- Magazine, empty
- not recorded
- Length
- 1,158 mm45.59 inestimated
From the Wikipedia infobox, uncited there. Intervention variant, stock extended.
- Length, folded
- 873 mm34.37 inestimated
From the Wikipedia infobox, uncited there. Intervention variant, stock folded.
- Width
- not recorded
- Height
- not recorded
- Barrel length
- 600 mm23.62 inestimated
From the Wikipedia infobox, uncited there. Intervention variant.
Sights and rifling
- Sight radius
- not recorded
- Sight height over bore
- not recorded
- Rifling twist
- not recorded
- Twist direction
- not recorded
- Grooves
- not recorded
- Sight graduation
- not recorded
Operation
- Cyclic rate
- not recorded
- Trigger pull
- not recorded
- Effective range
- 800 m874.9 ydestimated
From the Wikipedia infobox, uncited there, stated specifically for the 7.62×51mm NATO chambering.
- Units produced
- not recorded
- Launch price
- not recorded
Chamberings
- 7.62×51mm NATOprimary10 rounds
- .300 Savage10 rounds
- 7mm-08 Remington10 rounds
- .260 Remington10 rounds
- 6.5mm Creedmoor10 rounds
- 6.5×47mm Lapua10 rounds
- 6mm BR Norma10 rounds
Scale
A to-scale outline against family siblings. The dimensions are sourced; the shape is a representative outline for the type, and says so.
- PGM Ultima Ratio1,158 mm45.59 inheight not recorded
Representative outline: the dimensions are sourced, the shape is not. Overall length, and barrel length where recorded, are drawn from this entry's own figures; the profile is a generic one for the firearm type and says nothing about this arm's actual contours. PGM Ultima Ratio records no height, so its outline is drawn at the type's proportion. That height is part of the shape, not a measurement.
Detail
The Ultima Ratio is a French bolt-action sniper rifle built by PGM Précision since 2000, chambered primarily for 7.62×51mm NATO but offered with barrels for several other rounds as well. Its name is drawn from ultima ratio regum, “the final argument of kings”, the phrase Louis XIV had engraved on his cannon; the rifle competes commercially against the Accuracy International Arctic Warfare and Sako TRG lines at the high end of the factory sniper-rifle market.
This entry covers the Intervention configuration, the longest-barrelled of the family, alongside three variants that share its action and chambering options but differ in barrel length and mass: the shorter Commando I and Commando II, and an Integral Silencieux configuration built around a shortened barrel paired with an integral suppressor rather than a conventional muzzle device. Beyond 7.62×51mm NATO, PGM has chambered the platform for .300 Savage, 7mm-08 Remington, .260 Remington and 6.5mm Creedmoor, along with the target rounds 6.5×47mm Lapua and 6mm BR Norma, all recorded here as alternative chamberings of the same rifle.
No maker specification sheet independent of Wikipedia’s own uncited infobox figures was found for this page’s mass, length, barrel length or stated range, so all are recorded as estimated rather than verified. Magazine capacity for every chambering is likewise estimated from the same uncited source, and no rifling twist rate is published for any barrel length or chambering PGM offers.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- PGM Ultima Ratio · Wikipedia · 1371925552 · read 2026-09-24 · CC BY-SA 4.0
Last verified 2026-09-24 · review status: agent-populated