WEAPONS EXPERT 4: Kill 10 enemies with a shotgun using crafted ammo.
The prerequisite of this challenge is to complete “Paying a Social Call” (Chapter 21), and the rewards are 50 Health XP and $10.
This guide will let you know how to complete this challenge in Red Dead Redemption 2.
Using the slug ammo for the shotgun, you can craft two types of ammo: fire and explosive ammo.
The fire ammo recipe requires slug ammo and a bottle of moonshine that can be bought from any fence.
For the explosive ammo and the slug ammo, you also need to gather the animal fat.
The animal fat can be obtained by skinning/plucking bears, beavers, ducks, geese, peccaries, and pheasants.
After crafting the ammo, you will need to reach a gang hideout and kill all the enemies using only the shotgun until the challenge is completed.