Glad to help CQ.
If you are not set up for caustic blue I would recommend a 'Express Blue' finish.
I have Had real good luck with Mark Lees Express blue #1. I get it from Brownell's for $9.50 (4 oz.) or $20.00 (16 oz.). The key is to get the parts VERY clean and wair cloth or rubber gloves (to avoid skin oil contact) and apply in even coats.
It is easy to work with and gives a good looking and durable finish. It will take several coats but you can re do it any time with out stripping, just clean and re apply.
It only requires boiling water and fine steal wool or a soft wire brush/wheel. I apply with a paint sponge from any hardware store. it will take 5-7 coats usually to get a good finish.
I have had less than happy results with cold blues. Brownell's 'Oxie Blue' was the best I have tried but it is not very durable. Good for touch ups but I don't recommend it for complete parts of any size.