Rheinmetall plans to develop and manufacture a new 155 mm gun with a significantly larger chamber and longer, 60-calibre barrel, the company said in a 27 November press release. Rheinmetall told Jane's on 28 November that the company was exploring the possibility of building such a weapon for a wheeled self-propelled howitzer for the Bundeswehr's Zukünftiges System Indirektes Feuer (Future Indirect Fire System).
The company said in its press release that it planned to work closely with the German procurement authorities on a gun able to fire existing rounds compliant with the NATO standards set out in the Joint Ballistics Memorandum of Understanding (JBMoU) as well as new ammunition families. The new ammunition types will be optimised to withstand the stresses occurring in the new gun as well as being able to be fired from legacy JBMoU-compliant guns. The German procurement authorities have specified a maximum effective range of 75 km, according to Rheinmetall, which said it would use 83 km as the baseline as the course correction fuze necessary to achieve precision at these ranges reduces range by 10%.
The press release stated that Rheinmetall broke three maximum effective indirect fire range records during test firings at the Alkantpan test range in South Africa on 6 November. A new version of the Denel G6 howitzer with a 52-calibre gun achieved the longest range ever attained with a conventional artillery round by firing a non-JBMoU standard M9703 practice inert rocket assistance for enhanced range performance (V-LAP) 155 mm artillery round with a modified top charge over 76 km.
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