Bramble,

Yes I do.

As you know scaling is basically the forming of oxides on the metal's surface when it is heated. The temprature 1200F is a dull red colour and with anything around that lowish heat it is possible, but not very probable to get some slight scaling.

I don't want to chance having any scaling, no matter how slight. So although I only go to just over 1205F, I use an anti scale paste in the first half of the bores and in the chambers (even though they are not cut to full depth yet).

I am proberbly being some-what over cautious as well, but I can live with that

Once the temprature of 1300-1400F is exceeded how-ever, scaling is almost guarenteed, particulally if hand held oxy/acyetlene is used as the heat source. Now a vacuum furnace, that would be nice, no scaling.

Excellent comment on the re-melt temprature too! Hope it helps others to understand more why they struggle to remove the ribs on some guns.

Alex

alexbeer.com