Yeah been reading up on this; EXP19-M13A was produced hurriedly for the trial but did very well. I was surprised that the 110mm was in trials as well, not Aberdeen USA but Kirkbudbright and Shoeburyness, involving M68 and Rheinmetal 120mm-prior to the 1976 trials.Was it "King of the Killing Zone"?
As far as I know, the L11 wasn't involved in the final shoot-off trials in the US. The requirement was for a gun that fired one-piece ammunition, and therefore RARDE entered the experimental M13A, which ended up coming a very close second to the Rheinmetall 120mm.
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