On this side of the pond Hull Cartridge have always had a good reputation for having a top quality product second to none their cartridges do what they say on the box unlike other makers, I have always used hull cartridges on guns having 2 1/2 inch chamber's because other makers do not stick strictly to the cartridge dimensions.

[Linked Image from i.imgur.com]

In the photograph are the black a Hull and the blue is an Eley both are sold as 2 1/2 inch though as you can see the Eley cartridge end had entered the forcing cone increasing the recoil enough to rattle my teeth, so if you have a valued gun with 2 1/2 inch chambers here Hull cartridges are a must go to and use.

The only lessons in my life I truly did learn from where the ones I paid for!