The Super guns of WW1.

[CharlesBronson]

French 400 mm Puteaux monster, this railway howitzer was used to punch holes in the Verdun Fortresses allowing the recapture from accuping german forces. Muzzle Velocity was 510 ms and range 14,5 km.

Obus de 400mm MLE 1916 (Batalla de Verdun) - YouTube

[CharlesBronson]

British Vickers 381mm (15 inches) emplacement howitzer anothe big one wich could hurl one ton shells, seen here in the Somme, 1916.


LiveLeak.com - 15 inch Howitzer in the Somme

[R Pope]

How about the Paris Gun, Kaiser Wilhelm Geshutz? Not a big shell, but amazing range. The projectile reached above the Earth's atmosphere in its trajectory, supposedly the first man-made object to do so.

[mikewint]

Schneider Obusiers de 520. This French 520mm howitzer was the biggest gun of the Great War. It could deliver a 3,100 lb shell (600 lbs of explosive) over 10 miles. The gun car was just under 100 feet long and weighed 290 tons.

[TheMustangRider]

amazing photographs, thanks for sharing.