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30mm question
- Thread starter US-Subs
- Start date
@US-Subs
Any other markings and or history?
Assuming this is 30mm ADEN, it's somewhat unusual - Official RAF publications have the Mk. 3Z as HE not HEI. In 1971 when this was apparently manufactured the No. 3Z was probably listed as obsolescent/obsolete for further production as in 1970 it was being replaced by Mk. 6Z HE.
TimG
Any other markings and or history?
Assuming this is 30mm ADEN, it's somewhat unusual - Official RAF publications have the Mk. 3Z as HE not HEI. In 1971 when this was apparently manufactured the No. 3Z was probably listed as obsolescent/obsolete for further production as in 1970 it was being replaced by Mk. 6Z HE.
TimG
Hi Tim.
It was a bit hard to read details under the yellow paint and I do not think it would photograph too well unless really needed.
Case marked as in the photo: BMR 6-71 HEI 3Z.
Fuze stamped: AM. 2 BMR. 2-71.
Projectile stamped in 3 lines: 153 M7 C8 29
The 3 has a flat top and is not clear. C 8 may be a poor 0 but is a clear C.
Drive band is magnetic steel. All my other Adens have details on the belt but none on this one.
It was a bit hard to read details under the yellow paint and I do not think it would photograph too well unless really needed.
Case marked as in the photo: BMR 6-71 HEI 3Z.
Fuze stamped: AM. 2 BMR. 2-71.
Projectile stamped in 3 lines: 153 M7 C8 29
The 3 has a flat top and is not clear. C 8 may be a poor 0 but is a clear C.
Drive band is magnetic steel. All my other Adens have details on the belt but none on this one.
@ron3350 Ron,
I think what you have is a BMARC (British Manufacturing and Research Company) assembled round. Utilising a Radway Green case, a BMARC projectile (with sintered iron driving band) filled Pentolite and also their AM2 fuze. It would appear they were using 'BMR' as their monogram. I would be interested to know their reasoning for calling it a Mk. 3Z.
see - https://us1.discourse-cdn.com/flex0...5db344f50e569346f8f281e2d02d_2_1380x1762.jpeg
TimG
I think what you have is a BMARC (British Manufacturing and Research Company) assembled round. Utilising a Radway Green case, a BMARC projectile (with sintered iron driving band) filled Pentolite and also their AM2 fuze. It would appear they were using 'BMR' as their monogram. I would be interested to know their reasoning for calling it a Mk. 3Z.
see - https://us1.discourse-cdn.com/flex0...5db344f50e569346f8f281e2d02d_2_1380x1762.jpeg
TimG
Last edited:
Interesting yes.
The cavity has a flat bottom and not the usual rounded base of the Aden projectile.
The flat is level with the lower part of the factory crimp. Certainly not the HEI projectile you show on the image.
It is 65.7mm deep, threaded 24 tpi fuze and 22.8mm across the threads.
I checked Aden black Practice and threads are 28 tpi and 23.7mm diameter.
The flat base inside an MF Defa is 75mm deep so the projectile is a mystery but clearly marked HEI MK 3Z.
Photos are hard to see the projectile stamps but the fuze stamps seem clear enough. 5 views of the projectile shown so just zoom in.
The cavity has a flat bottom and not the usual rounded base of the Aden projectile.
The flat is level with the lower part of the factory crimp. Certainly not the HEI projectile you show on the image.
It is 65.7mm deep, threaded 24 tpi fuze and 22.8mm across the threads.
I checked Aden black Practice and threads are 28 tpi and 23.7mm diameter.
The flat base inside an MF Defa is 75mm deep so the projectile is a mystery but clearly marked HEI MK 3Z.
Photos are hard to see the projectile stamps but the fuze stamps seem clear enough. 5 views of the projectile shown so just zoom in.
