WildCattle,
We are mostly in agreement.The ammo loaded with cordite or nitro powder for use in BP proofed rifles is the "Nitro for Black" ammo.The NFP ammo was loaded to essentially duplicate the black powder ballistics,so that it would regulate in the rifles as closely as possible.The "Tropical" or "Light Cordite" ammo is different in that it is intended for use in rifles proofed for "nitro",in areas where conditions may change the burning rate of the powder(cordite)and increase the pressures.Ammo was not "proofed" per se, it was loaded to not exceed the proof of the rifles.
Mike
