Good evening... hoping to get some suggestions

I have recently purchased a rifle that was on my bucket list... Model 1899. I purchased a gun on consignment from a local gunsmith/refurbish house locally. In fact they have it now doing some clean up work on it now. The serial number is 30098 and dates from 1903 and it is chambered in 303 Savage. My question is regarding ammunition. Realizing there are limited outlets for it does anyone have suggestions where to purchase...

thank you
Frank