Dies are available from CH4D and RCBS. Cases are made by Starline and Bertram. Bullets are made by Barnes (original) and Woodleigh.
There are plenty of cast designs available and these will be your most economical options. You don’t say what your rifle is, an original slow twist rifle or based on a modern action with a fast twist barrel?
You’ll need to work out LOA constraints and the bullet shape that will reliably feed and cycle in your rifle. Some conversions won’t feed pills with a wide meplat or a long nose. Early originals were essentially express rifles launching lightweight bullets that had narrow meplats and a short nose.
