Originally Posted by BillDeShivs
No cold blue will hold up well, regardless of what it says on the package. The gun will also look terrible, regardless of the surface prep.
Not true, Not true, I have found a better way to use the BC cold blues.
I heat the CLEAN
parts to be blued by boiling the parts in water.
Then putting the parts in a zip-lock freezer bag & dumping in the whole bottle of BC Super Blue in with the parts, zip it up and shake.
This makes it cover fast with no spots or streaks, long barrels can be put in bags made from Food Saver vacuum freezer bag that comes in rolls, just seal one end.
Repeat if needed back to water until hot, then back to the bag.
When you get a good dark finish put in the water reheat then put in new
bag and do a soaking spray with a good gun oil like Remington's Rem-oil.
Seal the bag and let sit in warm place (I used the back window of an old car sitting in the sun) for 24hrs.
Works great with the BC Super Blue & Perma Blue.