experimental piece shelled German forces from Kubinka proving ground. The vehicle is still on display in the Kubinka Tank Museum. Ammunition The Br-2 fired specially developed ammunition. The shallow rifling pieces and the deep rifling ones also used different projectiles. High explosive / fragmentation and anti-concrete projectiles were produced; there is some indication that chemical and "special" (i.e. nuclear) projectiles also existed, though it is not completely clear. The bagged charge allowed three charges - full, no. 1 and no. 2. Notes References Isaev A. V. - Berlin 1945. A battle in the den of the beast - M. Yauza Eksmo, 2007 (Исаев А.В. - Берлин 45-го. Сражение в логове зверя. - М.: Яуза, Эксмо, 2007 - 720 с. ) Ivanov A. - Artillery of the USSR in Second World War - SPb Neva, 2003 (Иванов А. - Артиллерия СССР во Второй Мировой войне. — СПб., Издательский дом Нева, 2003., ) Kolomiets M., Svirin M. - Kursk Salient - M Eksprint NV, 1998 (Коломиец М., Свирин М. - Курская дуга. — М., Экспринт НВ, 1998. — 80 с. ) Shirokorad A. B. - Encyclopedia of Soviet Artillery, Mn. Harvest, 2000 (Широкорад А. Б. - Энциклопедия отечественной артиллерии. — Мн.: Харвест, 2000. — 1156 с.: илл., ) Shirokorad A. B. - Northern Wars of Russia - M. AST, 2001 Ш(ирокорад А. Б. - Северные войны России. — М., АСТ, 2001. — 848 с., ) http://www.soldat.ru/doc/mobilization/mob/chapter2_5.html World War II artillery of the Soviet Union Artillery of the Soviet Union 152 mm artillery Military equipment introduced in the 1930s