That exactly aligns with my 17 pdr construction, with a separate outer base allowing for the insertion of the core + a screw in base for the petal. As I mentioned previously, I could not understand why they would used a different manufacturing method between the 6 & 17 pdr unless they were made by different companies, and this would not make sense as they would have to conform to the same military construction specifications.
The machined sections on my core outer sheath appears to be purposely done - too good a job just to extract the core IMHO.
The machined sections on my core outer sheath appears to be purposely done - too good a job just to extract the core IMHO.