Bergmann–Bayard pistol
Anciens Etablissements Pieper1901–1935Smokeless revolution
Also known as Pistola Bergmann de 9 mm. modelo 1903
Image credit
- Title
- File:Bergmann-Bayard 9mm Largo S-n 8734 R DSC8591.jpg
- Author
- Self Loader(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:Bergmann-Bayard_9mm_Largo_S-n_8734_R_DSC8591.jpg
How Muzzle energy is calculated
E = ½ · m · v²
Not calculated: v has no sourced figure yet. Nothing is substituted for a missing input.
1 of 2 inputs link to their source.
How Muzzle velocity is calculated
no sourced velocity for this load
Not calculated: muzzle velocity has no sourced figure yet. Nothing is substituted for a missing input.
No input on this calculation carries a clickable source yet.
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.
2 of 4 inputs link to their source.
How Free recoil is calculated
E_recoil = ½ · m_firearm · v_recoil²
Not calculated: v_recoil has no sourced figure yet. Nothing is substituted for a missing input.
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.
1 of 2 inputs link to their source.
How Capacity is calculated
as published for the primary chambering
Inputs
- capacity6estimatedsourcePublished as a 6- or 10-round detachable box magazine, from the infobox, uncited there; 6 rounds recorded here as the standard grip magazine, with a 10-round option also published.
1 of 1 inputs link to their source.
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
Not calculated: v has no sourced figure yet. Nothing is substituted for a missing input.
1 of 2 inputs link to their source.
How Sectional density is calculated
SD = mass(gr) / (7000 · diameter(in)²)
Inputs
- mass8.2 g126.5 grestimatedsourceCited article's ballistics table, with no source credited for the row and no test barrel length stated anywhere in the article, so no velocity is recorded.
- diameter9 mm0.3543 inestimatedsourceCited article's infobox; see caseLength note.
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
Not calculated: velocity has no sourced figure yet. Nothing is substituted for a missing input.
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.
1 of 2 inputs link to their source.
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.
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
- Pistol
- Action
- Self-loading
- Fire modes
- Semi-automatic
- Operating system
- Short recoil
- Roles
- Designed in
- German Empire
- Introduced
- 1903
- Production
- 1901–1935
Dimensions and mass
- Mass, empty
Model 1910/21, from the infobox; no inline citation is given there.
- Magazine, empty
- not recorded
- Length
Model 1910/21, from the infobox, uncited there.
- Length, folded
- not recorded
- Width
- not recorded
- Height
- not recorded
- Barrel length
Model 1910/21, from the infobox, uncited there.
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
From the infobox, uncited there.
- Units produced
- not recorded
- Launch price
- not recorded
Chamberings
- 9×23mm Largoprimary6 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.
- Bergmann–Bayard pistol254 mm10.00 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. Bergmann–Bayard pistol records no height, so its outline is drawn at the type's proportion. That height is part of the shape, not a measurement.
Gallery
Image credit
- Title
- File:Danish M1910-21 pistol w.Holster.jpg
- Author
- Costas-1963(attribution required)
- Licence
- CC BY-SA 4.0
- Source
- https://commons.wikimedia.org/wiki/File:Danish_M1910-21_pistol_w.Holster.jpg
Detail
The Bergmann–Bayard pistol is a recoil-operated, locked-breech semi-automatic pistol Theodor Bergmann designed in Germany between 1901 and 1910, chambered for the 9mm cartridge he and Hugo Schmeisser had developed alongside it, the round now known as 9×23mm Largo. Unable to find a German manufacturer able to complete a Spanish order for 3,000 pistols, Bergmann turned to the Belgian firm Anciens Etablissements Pieper in Herstal, which built the pistol under its own Bayard trade name and became its lasting manufacturer.
Spain adopted the Model 1903 in 1905 as the Pistola Bergmann de 9 mm. modelo 1903, and Denmark adopted the derived Model 1910, with an initial delivery of 4,840 pistols to the Danish Army. The Danish M1910/21 variant remained that country’s standard-issue sidearm until 1946, when the Browning Hi-Power replaced it; Belgian production had stopped in 1914, and from 1922 to 1935 the pistol was built in Copenhagen. Along the way it saw combat in the First World War, the Rif War, the Spanish Civil War and the German invasion of Denmark.
Mass, length, barrel length and effective range on this page come from Wikipedia’s infobox, which carries no inline citation for any of them, so all are recorded as estimated rather than verified, and reflect the later Model 1910/21 configuration specifically. No manufacturer specification sheet was reachable for a pistol this old. No published twist rate was found for this entry.
References
This entry's own bibliography. Every citation key on this page resolves into this list.
- Bergmann–Bayard pistol · Wikipedia · 1360428462 · read 2026-09-24 · CC BY-SA 4.0
Last verified 2026-09-24 · review status: draft