View Full Version : cold blueing

October 14, 2005, 01:35 AM
i brought a nef single shot shotgun back from the dead. the reciever was very rusted. why cant i get the cold blue to take on it? do i have other options?

October 14, 2005, 01:46 AM
Some steels wont take a cold blue..if your receiver was case hardened (as were many) it wont blue...

Try steel wooling it, then degrease with gunk out or carb cleaner or mek.....try applying black majic cold blue with a clean patch, not a cotton swab (that has lanolin)...wipe it on in long stokes, then blend in with steel woll dipped in oil (use 0000.....) degrease and apply again till it looks lovely...if it works :)


October 14, 2005, 04:40 AM
All NEF/H&R shotgun recievers were case-hardened.

October 14, 2005, 02:23 PM
Duracoat has some new gun blue paint which will give you a very good finish on it. Most cold blues won't take on a case hardened receiver at all. If what WildAlaska gave you doesn't work, try just using steel wool with some rust remover. I use the silcone cloths that will remove rust myself on these. It works rather well at getting the rust off of the gun.

Like I said though, if all else fails, try the paint method, I know for sure it will work for you. I camoflage a lot of them that come in.

October 14, 2005, 11:57 PM
Not all the H&R/NEF are case hardened , some where blued , I had a 1993 LTD edition H&R Sniper rifle that I got from a local swat sale so to speak with the flamed maple wood and gold medallion that was blued dark.It was so dark and deep that I was tempted to get the tactical stock and forend/heatsheild.

October 15, 2005, 12:09 AM
ok next question.....how hard is it to take the reciever apart and put back together. im no stanger to taking apart firearms but these look a little difficult due to the one piece reciever

October 15, 2005, 03:35 AM
Yes, the rifle recievers are blued - but the shotgun recievers are case-hardened.

October 16, 2005, 02:13 AM

There is a wealth of info on the NEF guns at http://www.graybeardoutdoors.com/phpbb2/viewforum.php?f=126&sid=899d94d793cc5f24c542f92e44409a94

Have a look particularly at the FAQs and the Trigger Work sticky. You will probably find something helpful there.

By the way, I have polished and painted a receiver and barrels on an old double shotgun. Looks great!

October 16, 2005, 03:04 AM
thanks for the link. thats just what i needed to see. your the man

October 16, 2005, 01:08 PM
brownell's makes this stuff call 4440....it is an instantaneous cold blue....heat the part and wipe it on and imediately wipe it off. if you use this stuff, have all of your gear ready to go..it truly is wipe on and switch to a clean dry cloth and wipe off...leaving it on for extended periods of time makes it really hard to get an even finish.

October 16, 2005, 09:28 PM
I've had considerable success using a piece of Scotchbrite sanding/scouring/polishing pad to apply cold bluing with. I first saw this tip on some website a couple years ago, and it works much better than steel wool in my experience.

I've used the white, grey, and the green colored Scotchbrite with equal success. White is the finest grade; green is about a medium grade. Just degrease as usual, then use the SB to apply the bluing. It blends the stuff in real well for some reason. I haven't tried it on case hardened surfaces, but it works great on mild steel and the shotgun and rifle recievers I've tried it on.

Hot Gluing a small piece of the SB to a popsicle stick makes a very handy applicator, and you can rinse it out in water and reuse it many times.

Try this out on the case hardened surface; it may work.

Happy and SAFE Shooting! Joe

Mike in Michigan
October 19, 2005, 10:54 AM
Those frames are CAST steel and will not take to any kind of cold blue or hot blue. Paint, bead blast, cough up the bux for a color-case jub, or love it the way it is. Mike

October 21, 2005, 12:03 AM
ok.... how about powder coating? i can have it done for free. will the reciever be ok in the oven?
now i have another problem. i took the reciever apart and some parts fell out. is there any where to get disassembly/assembly instructions.

October 21, 2005, 12:33 AM
try this out, it is a good source of info on the handy rifle or shotgun.


It sounds like the part that locks the barrel from opening while the hammer is back is what fell out on you, but it could be several different things. You can have the outside of the receiver and barrel done without any problems with interference, just don't powder coat the insides. Here's a pic of a Handi
Rifle I just redid for my son.



I had previously painted it using Krylon camo paint. I redid it using Duracoat. The receiver should withstand the heat from the oven very well.

October 21, 2005, 01:10 AM
Thanks for the tips. I am looking at rebluing a rifle I refinished the stock on (a Baikal TOZ .22LR) for my son, and will give the Scotch pads a try.:)