HELP Finding "XM" length box magazines

[Hawkeye Pierce]

OK everybody I need some major help. I'm looking to order an XM length action from Defiance machine but I can't find any box magazines to fit in the American Precision arms bottom metal. Does anybody use these types of actions or know of someone who has Dropbox magazines? Also do you know if they can only use the Winchester short magnum style of cartridges or do the magazines come size to fit the 308 family as well?

 

[highdrum]

Bdl setup
https://defiancemachine.com/accessories/bottom-metal-kits/
Detachable bottom metal
https://www.altusshooting.com/products/hawkins-precision-m5-dbm-defiance-deviant-xm-action

Magazine feed lips are adjustable with tools to accept wsm or 308 cases, MDT makes xm length mags.

 

[Hawkeye Pierce]

Bdl setup
https://defiancemachine.com/accessories/bottom-metal-kits/
Detachable bottom metal
https://www.altusshooting.com/products/hawkins-precision-m5-dbm-defiance-deviant-xm-action

Magazine feed lips are adjustable with tools to accept wsm or 308 cases, MDT makes xm length mags.

Thanks for the reply, i will be looking into it further.