Schneider-Canet 75mm field gun type PR



I. Features


Gun-body in hardened steel and hooped housing to the muzzle composed by a tube and two jackets assembled by a screwed hoop.

Breech with eccentric screw mechanism, interrupted threads, opening with an uninterrupted single action of the hand-lever.

Repeat firing device with hammer and safety arrangement against premature fire and prolonged fires.

Covering tubes of the cylinders of the buffer and the recuperator, assembled to the gun, and recoiling with it. They can be easily dismantled.

Hydraulic buffer containing the check buffer.

Spring recuperator divided in two columns lodged into two covering tubes.

Cradle of stamped steel sheet of the same kind of the shield carrying the bronzed recoil slides. 

Elevating gear fitted for an independent line of sight with range dial device on the right, and sitogoniometer (goniometric angle of site measurer) on the left.

Goniometric sighting gear with optical sight. Prismatic device for back aiming.

Carriage of stamped steel sheet.

Traversing on axletree bed.

Trail spade composed by a fixed ploughshare  in forged steel and a folding part in steel sheet.

Firing seats for the aimer and the firer.

Wooden wheels with steel tyre and steel nave.

Gun-shield made by steel sheet of the French artillery type

Gun and wagon limber of the same kind, with chests for the ammunition and knapsack-rack with grid to carry the cannoners equipment.

Armoured wagon body that can be tilted, provided of a trail that, depending on the circumstances, can receive an armoured observatory.

Fixed ammunition lodged in the sockets.

Shrapnel with charge at the bottom equipped with time and percussion fuze.

Thin-walled high explosive shell equipped with percussion fuze and loaded with high explosive (Schneiderite).

Pure nitrocellulose powder made in France.

Mechanical fuze-setter for time and percussion fuzes lodged in the shrapnel ammunition wagons.


II. General properties


The power is obtained by means of a projectile weighting 6.5 kg shot with a muzzle velocity of 500 m/s.

The mobility is very satisfactory due not only to the moderate weight of wagons and carriages, but also to their balancig and good states of their drawing.

The steadiness on firing is complete. The accurate setting of the return cylinder buffer and of the check buffer suppressed at the same time the recoil, the rising, and the tendency to throwing during the retun in firing position. The traversing gear shifting on the axletree bed suppressed the entire systemic component which tends to deregulate the traversing.

The complete return in firing position is assured under angles greatly superior to those enabled by the carriage. The action of the check buffer assures a return in firing position regular and without shock. The division of the spring in two columns, both composed by many elements, makes unimportant the breaking of a spring; the breaking of a spring is greatly reduced by the weak rate where their metal works.

The ranging fire and the progressive fire with time fuze  are made widely easier by the adoption of the independent line of sight.

The execution of the indirect fire is as simple as the direct fire, owing to the combined arrangements of the aiming, sighting, and observation devices.

The safety on fire is complete; the eccentricity of the breech and the mechanical safety-piece of the firing gear prevent any trouble.

The protection of the cannoners is perfectly assured thanks to the gun-shield and to the tilted armoured wagon, placed side by side next to the gun.

The rapidity of fire can reach a rate of 25 – 30 rounds per minute with progressive and sweeping fire with time fuze, thanks to the easiness of the breech action, the independence of the loading and of the aiming operations, to the use of the fuze-setter, and good layout of the artillery matériel as a whole.


III. Numerical references and data

                   Main data

Calibre :

Shell weight:

Muzzle velocity :


Barrel length :

Weight of the gun with the breech-block :

Weight of the breech-block :


Height of the line of fire :

Height of the line of sight :

Length of the line of sight :

Elevation :

Traverse :

Diameter of the wheels :

Track :

Weight of the carriage without shield :

Weight of the 5 mm shield :

Weight in action :


Weight of the empty limber with tools and complements :

Weight of the ammunition carried :

Weight of the limber loaded and equipped :

Number of the rounds carried by the limber :

Weight of the gun in marching order :

Weight of the empty body with tools and complements :

Weight of the ammunition carried :

Weight of the body loaded and equipped :

Number of the rounds carried by the wagon body :

Weight of the ammunition wagon :

Number of the rounds carried by the ammunition wagon :

Weight of the armoured observatory :


Weight of the projectile :

Weight of the charge (French smokeless powder) :

Weight of the empty cartridge case with tube :

Weight of the shelled cartridge :

Number of the shrapnel bullets weighting 10 g :

Weight of the bullets :

Weight of the bursting charge :

Weight of the charge of Schneiderite of the H. E. shell :


75 mm

6.5 kg

500 m/s


2400 mm

389 kg

13.5 kg


945 mm

1130 mm


- 5° / + 16°

1330 mm

1450 mm

598 kg

75 kg

1062 kg


392 kg

312 kg

704 kg


1766 kg

486 kg

492 kg

978 kg


1682 kg




6.5 kg

550 g

1.130 kg

8.180 kg


3.110 kg

80 g

600 g

Remarks : There are two other models of limber, the first carrying 30, and the second carrying 32 shells and weighting respectively 654 kg and 664 kg (loaded). The weight of the wagons equipped with these limber are respectively 1716 kg (gun) and 1632 kg (ammunition wagon), and 1726 kg (gun) and 1642 kg (ammunition wagon).




This is the translation of an advertisement of the French firm Schneider-Canet published in 1908 (SCHNEIDER & CIE. Matériel de campagne ŕ tir rapide de 75 mm, type PR), reporting the main features of the 75mm quick firing gun PR (Puissant ŕ ressorts = Powerful with springs). It is the original model of the gun, with the standard French Army features (thicker shield, dependent line of sight, and so on).