BD26 predecessor to L26 ? L26 have uranium or tungsten core ?
judging by drawing, it's more like L27 imho...
CHARM U 3/4 Ti
BD26 is a 120mm APFSDS projectile which incorporates the latest tungsten-nickel-iron penetrator technology to achieve an increase in penetration performance of the order of 15% over the current in-service L23(OE)APFSDS projectile. BD26 is designed for operation with the existing Lll ordnance and L8 charge.
The penetrator is made from a Tungsten/Nickel/Iron alloy (TF49P) with a 6 blade steel tail unit and steel nose tip. It is located in a 3-segment aluminium alloy saddle type sabot with a buttress form screw thread which provides the 'drive' between the sabot and penetrator.
Without knowing where that came from, that sounds like Operation Jericho, which was an effort to get an operational emergency round to Challenger units in Operation Granby in 1991. I believe they introduced the under development L26 fin round and made it compatible with the L11 gun and the bagged charges they had at the time. It was strictly an interim measure to deal with T72s if they turned out to be as well armoured as Soviet ones were. As it turned out, I think the only T72 the British army encountered they nicked off the Americans, and it was probably never used. Looking through the Challenger 1 manual, there were a number of amendments made in 1991, which may well have had been related changes. There were for example armoured charge bins, and ive got a sneaking suspicion there may have been a new charge for it too.
There is a bit about this in the Haynes Challenger 1 book and the Osprey book on the same if its any interest. It does show what can be achieved when somebody holds a gun to the MOD's head, maybe the army shoudl do it more often.
Edited by Stuart Galbraith, 25 November 2017 - 0316 AM.