[genocidicbunny]

> And "shelf-stable and safe for many decades" is never a priority feature for high-volume wartime production of explosives.

Maybe not on the order of decades, but 'shelf-stable and safe for handling' is a definite concern in any ordnance production. Last thing you want is your whole ammo stockpile blowing up because a tired soldier set an artillery shell down a little too hard.

Many of the explosives used are actually fairly stable chemically and require either severe degradation to become unstable, or an external force applied to them that is sufficient to trigger their explosive effects. C4, as long as it hasn't been sitting around too long, is pretty safe to light on fire. And yet it's one of the more energetic commonly used explosives out there.

[zmgsabst]

Also, an artillery round in particular can’t go off from the shock of being thrown by an explosive right next to it.

Or you kill yourself, when your round detonates in the gun.