" I have several Savages in .303, so I am always looking for it."
Easy as pie to make your own .303 Savage brass. Just FL size .30-30 brass in the .303 Savage die (I have a Lee set). Then cut a strip of masking tape about 4" long and 1/4" wide and circle it around the base to act as a centralizer for the first firing, so you get a uniform bulge. Then remove the tape. I have made hundreds of .303 Savage cases that way over the last 10-12 years. You can also use .220 Swift brass, but that's a lot more work.