I will be brazing a receiver for a derringer kit. Have never done it before. Have access to an oxy/acetylene torch but need advice about which solder to buy. The ATF won't let the kit vendor give instructions.
A friend of mine says silver solder is the way to go but there are many options. There are the expensive rods that work at low temperatures.
Or standard solder from Home Depot that is ~$30 for 5 sticks
These are the 11 gauge sideplates.
I downloaded the "Brazing Book" referenced in the instructions. It's 129 pages. Too much information.