I just thought for completes I would photograph a couple of cartridge box tops containing information about the contents inside. The top box flap is Hull cartridge company this being my go to for all my nitro proof 2 1/2 chamber guns the other is if I want something a little faster the Lyalvale for clay though still for all my 2 1/2 chamber guns. There is no pressure quoted because here we only need to know the gauge chamber length and shot weight, so if your gun is in good condition and in proof for the type of propellant in this case Nitro the cartridge can be used in any gun irrespective of age in my case gun's made from 1860 to 1950 all my other guns are 2 3/4 chambers.

[Linked Image from i.imgur.com]