The first thing you have to do is complete the game, which allows you to interact with The Duke to buy him the Magnum Ammo blueprint.
The exact recipe for this weapon is as follows:
1x scrap metal
4x Rusty Scrap
All the ingredients can be found without much hassle.
When you have the ingredients you must press the triangle or Y button depending on your platform, then you will have to press the R1 / RB button, this allows you to access the creation tab> choose the weapon to create> press X or A to create it.
That's all you have to know about how to make Magnum Ammo in Resident Evil Village, we hope that our guide has been as useful as possible, and you can make the ammunition you require for this weapon.
RE Village, RE 8, Resident Evil 8
Microsoft Windows PC, PlayStation 4 PS4, PlayStation 5 PS5, Xbox One, Xbox Series X/S