USA and UK brass, what's the real difference? Annealing video follow up. 

Thanks for the video guys! brass like this containing copper is work hardened, the hardness from the virgin brass will be work hardened from the manufacturing process. im no expert on the physics of the cartridge but maybe if you bring the softness down too low it may cause the brass to flow forward more upon firing, it may be worth testing the length increase of each softness of the cartridges after firing. annealing time could be due to copper content.

Great follow up vid Russ. Helps clarify a lot.

Excellent video once again. I thought I was on the right track, I'd be curious to see the European brass next to the American. You might be able to see a color difference if the copper content is much higher. Lighter yellow in US brass and possibly a richer gold tone for Euro brass. I have some Norma and GG&G I'll check against some Hornady when I get home.

Thanks Russ. Loved these annealing videos. I have a question that would benefit everyone who does not have a gauge. Can you ask Gordon if he was using the 'starting to glow' method then how many seconds this would be. I just want to establish if this method is still viable for those without gauges and/or using a gas burner.

What is the model of the Webster tester?

If you don’t cool it ,You are hardening it.

Rapidly cooling in water is what softens brass. Get it in water before it cools slowly AND HARDENS.