nigelfe Posted 9 January , 2011 Share Posted 9 January , 2011 I think the chart is WW2 (there weren't any multi-charge Guns in WW1), I think the gun is 4.5 inch (which had three charges) although it could be 5.5, however if it were 5.5 it would probably have either 80 or 100 lb shell. It's probably 'Axis of the Bore'. Time fuzes could include No 210, 213 and 222, DA fuzes 117 and 119. The multi-charge means it wasn't a WW1 leftover (eg 18 or 60 pr) with a streamlined version of WW1 fuze (ie No 106E became 115), according to my web site ammo page http://nigelef.tripod.com/ammo.htm. Link to comment Share on other sites More sharing options...
ianjonesncl Posted 9 January , 2011 Share Posted 9 January , 2011 I think the chart is WW2 (there weren't any multi-charge Guns in WW1), Nigel This would tie up to the different Muzzle Velocities as calibration data would need to be available to allow approriate corrections to be made. Link to comment Share on other sites More sharing options...
nigelfe Posted 10 January , 2011 Share Posted 10 January , 2011 Guns were calibrated in WW1, there's a section of calibration in WW1 on my web site. However, I'm almost certain that Airburst Ranging Charts weren't introduced until WW2 (DUAI 1, 'Airburst Ranging Charts', 1943 to be precise). [DUAI stands for Directions for the Use of Artillery Instruments] Link to comment Share on other sites More sharing options...
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