I have a small selection of range pickup .303 British Brass that needs to be fire-formed to my rifle. After the initial shooting I’ll be moving to neck sizing so I can extend the life of the brass.
Just drop a case into a deep 14mm socket, spin in flame of the small torch for a moment and quench in water to stop the heat from transferring to the body. Repeat as necessary.
Next steps, debur flash holes, uniform primer pockets, full length size (First time only), load.
Happy annealing!