Jorge:
from another guys post, this was also on their website:
https://secure.modernarmsinternational.com/category/cases/cases-300-winchester-magnum-brass/New, $49.50 for 50 pieces of brass, Norma Made..
if you want used for reloading... Local guy here in town...
https://brassmanbrass.com/John has a bunch of sources for brass, LEO depts, Several manufacturers... I know he has contract with Weatherby...
his pricing includes shipping...
I don't know if dropping my name will help, but it certainly won't hurt...
great guy! and great prices...
his site lists the 300 Win out of stock.. but I know he has a bunch of stuff over there, he hasn't had time to update on his site....
if his prices look attractive, PM me and I can stop by over there tomorrow and bring your need to his attention...
I have to see him anyway as I am doing some loading for his 20 Practical for him.... so we can go out after sage rats in a few weeks...