Any thought about how or why the 30x165 is 3x as lethal as the 23*152?


While this is for a somewhat less lethal 20mm round, I'd expect to see a 'lethality' proportion somewhere in the same ballpark (generally lethal ranges increase with the cube root of weight, both for immediate blast effects and lethal fragment numbers ~ the larger round does have a significant increase in maximum penetration of armour/structures due to blast and fragments very close to the burst.

There will be an increase in area covered for each impact location, and also an increase in the damage caused to structures within this area, but I doubt that this comes close to 'complete' lethality.