Bertram Brass is imported from Australia. They specialize in the production of high quality brass for obsolete and obscure calibers. New unprimed brass.
Preparation:
Due to the manufacturing process and/or shipping, case mouths may not be perfectly round. To insure a round case mouth, cases must be sized (or have the expander ball of the sizing die run through case neck) and deburred/Chamfered prior to loading.
Notes:
A light "staining" may be found on the case neck of new brass. This is due to annealing. Annealing is a process, performed by the manufacturer, which involves rapid heating to a specified temperature followed by rapid cooling. This process imparts cases with the proper hardness to securely hold a bullet as well as gives flexibility to expand and contract upon firing and repeated forming. The "staining" is a residue from this process. This stain may be removed by tumbling before loading.