Hello There, That's the best news I've heard all day ! Are those the steel MDT mags, or AI mags ? CIP length ?Mill out the front ribs on a CIP length .300 Win mag magazine and it will work for you. That's what I do to run Ultra Mag cases in them. In the photo's you can see the front rib in the mag has been milled out. There may be a company selling them like this by now.
View attachment 610938
View attachment 610939