Where can one buy factory type ammo boxes ( 10-20 rounds ) for cartridges such as 450/400, 416 rigby, 458 lott?

Try Midway

MTM make slip top boxes which usually take 20 cartridges and a thing called an ammo-wallet that takes 10 and is made for some big bores. I like the 22 round box but it is not quite what you are after.

Here is a chart to help you pick out the right one:


https://cdn.shopify.com/s/file...Web.pdf?v=1646853880

Thanks guys, it looks like plastic is what I'll have to do. I'm still curious where the ammo companies get Thiers.

Midway and Graff and Sons have white factory type of 20 round boxes with foam seperators..I use them mostly..