I recently purchased a new 9mm Canik tp9 sf handgun, and at the time I new ammo was in short supply, it turns out there is more of it out there than I had thought on the internet for sale thru various vendors, but a big majority of it is steel case. Having years of experience with brass cases mostly rifles, but zero experience with steel case ammo leads me here to see what other peoples opinions are for steel vs brass cases. Please explain you response pros and cons.