Well, it took me forever to finally find out that they DO make a Type-S, Full-Length Bushing die for the .338 Norma. Their website and online catalog are very hard to follow, and I couldn't find what I was looking for. I finally wound up calling them and spoke to a nice lady who finally found out for me that yes, they do the 338 Norma in their Custom series, and they actually had a couple in stock at that time! Of course, I still had to order it through Brownell's, and she warned me it would take at least 6 weeks for me to get it because that's how backed up Redding was on filling orders, but I placed the order and it arrived through Brownell's as promised, in about 6 weeks. I would recommend calling and talking with them directly.
It looks like Forster has you covered with their Ultra Seating (micrometer-type) die. They work great and seem to be at least as good as the Redding version if not better. That's what I did for my 338 Norma seater, and they list the .300 Norma on their chart as well.
Another place you may want to check with is Whidden Gunworks. I know they have worked with the cartridge designer of the 300 and 338 Normas, and I obtained a shoulder bump gauge for the 338 Norma from them, and I'm pretty sure they made bushing dies for the 338 as well.