I have bought 5.56 mm ammo in the past from a place called SGAmmo, they're a reliable online company, know of a number of people who have bought there. I looked at their 300 Savage selection and they have some Federal and Winchester 300 Savage for sale, but it is in 200 round cases only. There is a online site called 'Ammoseek' that has alot of sites and outfits listed selling ammo of all caliber and manufacturer. I've never used it, but I know several persons that have used it to locate and buy ammo, especially at times when certain calibers are hard to find due to buying panics by the public.
