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  1. Hi All, I originally started this thread as a means of confirming some dims for the QF 75mm tube but as I get further into my quest I find I need slightly more than I started with and so it occurs to me that this thread has the potential to turn into a useful aid to anyone who might need to mock up a QF 75mm, or parts thereoff, as a stop gap for some missing parts on a resto. So, initially I've tired to pin down the measurements of the the tube, followed by a Cromwell Mantlet, then the Breech Ring and Breech block, and hopefully finish up with something on the cradle and anything else that comes to mind. I've got a quick question re the 75mm on a Cromwell. In the drawing below I've marked various parts of the barrel and what I'm mostly interested in is the bevelled segment marked "B". From what I can tell the aperture in the Cromwell Mantlet that takes the 75mm is also bevelled at the rear of the Mantlet, is that correct? I so I presume that this is to take the bevel on segment "B". The next question is how far into the Mantlet does this bevel go, all the way so that the front face of "B" is then flush with the front of the Mantlet or does it only go part of the way into the Mantlet with segment "C" keeping the gun running true from the front of the aperture? Finally, can anyone provide dimensions for A - E? Thanks in advance chaps!
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