Ready, here we go. Lets back up to when you are satisfied with the results rinse in hot water, use the Birtchwood Casey Perma Blue all over the gun, especially in all the protected areas. Place the parts in a glass tray in a heated oven (300 degrees) to get the metal to the point water will sizzle on the surface of the gun.  

 Be sure to try and keep the cylinder and bore clean during this operation. Also take care to keep the inside areas of the frame free from rust.   

Be prepared with the Plumb brown solution and a small bristle brush to apply it. 

It is very important to take the gun from the oven and move it to a well ventilated (Outside is good) area before Appling the browning because some real bad fumes result when the solution hits the metal. THIS IS REAL IMPORTANT if you want to continue Cowboy Action Shooting without a ventilator. 

Apply the browning liberally and cover every area, Let the solution sit for 1-2 minutes and spray with WD-40. The metal will still be too hot so let it cool. Next take a wad of 0000 Steel wool and scrub the gun taking the surface rust off and leaving the brown in the protected areas. I can’t tell you what to take off. It is up to your creative instincts now. Degreasing again and heating the metal with a propane torch and Appling more brown and taking it off will accomplish the desired results.

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Be sure to keep cylinders and base pin hole clean

Click here for pictures of the finished Great Western II Californian 45 Colt.