hi I've had this large brass shell casing for quite a while , obviously I know what it is ..but I dont know what kind of artillery piece may have used such

First Post! Need Desperate Help Identifying Artillery/Tank Shell - General Ammunition Discussion - International Ammunition Association Web Forum

Ok I know this question is a little odd to say the least, but is it safe to put brass casings in my tanks at decor? : r/Aquariums

In focus: the Bofors 57mm Mk 3 gun that will equip the Type 31 frigates

Artillery Shell Casing - Canada

Artillery shell cases, fuzes, primers and tubes. – Stephen Taylor, WW2 Relic Hunter

Artillery Shell Casing - Canada

Artillery Shell Casing - Canada

Smith & Wesson Model 350 Revolver: Full Review - Guns and Ammo

Artillery Shell Casing - Canada

Ammunition problems: How to detect, prevent, and avoid them – Primetake

Can anyone ID this WWII era shell? - General Ammunition Discussion - International Ammunition Association Web Forum