Water bath anneal

[Webster]

Brass starts annealing (maybe the wrong term, as time is a factor as well) at about 500ish degrees. At 500, it would take a long time (hours, if not days) to fully anneal a piece of brass, as all annealing is temp and time. The 750 figure that came about by practice (I assume); a temperature that will fully anneal the neck and shoulder area of the brass without transferring too much heat to the base area. Brass (rifle brass, that is) will anneal at 750 in a second or two. You can anneal at a lower temp (with the requisite longer time), but the heat transfer to the case base and head could be enough to create an unsafe condition (you want the head relatively hard, and the shoulder and neck relatively soft.) Doesn't answer your question, per se, but given the parameters of annealing rifle brass, it kind of makes sense.

750F will not fully anneal cartridge brass. 750F is the bottom end temp for flash annealing. You don’t want fully annealed. The brass would be extremely soft.

 

[divingin]

750F will not fully anneal cartridge brass. 750F is the bottom end temp for flash annealing. You don’t want fully annealed. The brass would be extremely soft.

I meant "fully annealed" from a reloading standpoint. Annealing bulk brass blocks or other non-shooting related material is a different matter. Adds to the confusion in discussions, I know.

 

[WIB3]

Spend some money and get an AMP. Will not have any problems.