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General artillery, SPGs, MLRS and long range ATGMs thread.


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https://www.army.mil/article/182638/picatinny_engineers_double_range_with_modified_m777a2_extended_range_howitzer

Quote

"We put together an integration test bed for the M777A2 Extended Range (M777ER) howitzer program, incorporating a 55 caliber cannon tube on the M777A2 towed howitzer," said Andy McFadzean a Special Project Officer at the U.S. Army Armament Research, Development and Engineering Center or ARDEC.

"We shot a total of 70 rounds using the Modular Artillery Charge System (MACS), zone two to zone six, propelling charge. This test marked the first time a MACS zone 6 was fired from the M777 howitzer. Previously, the top charge fired was a MACS zone 5."

The modification added six feet to the cannon while limiting the increase in overall system weight to less than 1,000 pounds.

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