If you want to use the very best brass in your 338 Edge, then locate and purchase some RWS 404 Jeffery brass. RWS doesn't manufacture 404 Jeffery brass any longer, but there is some to be found every now and then, and RWS brass is every bit as good as Lapua brass. You'll have to go through several neck sizing and neck / shoulder annealing processes to end up with 338 Edge brass, but 60 cases will likely last you as long as your rifle barrel does. RWS brass will take high pressure loads like Lapua brass without losing the primer pockets. Biggest problem is it can be difficult finding any of the 404 Jeffery RWS brass. I found and purchased 40 cases about 3 years ago - paid $2.50 per case at that time.