ive had really good success with this in your own kitchen doing rust brown, blue or black. first you need mark lee of the color you want, brow, or blue. if you want black you need both. to get black mix the mark lee and brown together 50/50/ ive never used birchwook casey plumb brown but using my method i bet it would work good also. now lets do a cva pistol. take all metal part apart, seperate the ones you want to finish. sand carefully with 220 wet sanding paper you get from a good auto store all metal parts. dont need to be shiny but groove and scratch free and with out any sand marks. when you have done that this next part is very important. no matter where you live their is a auto repair shop, farm equiptment shop or blacksmith shop that has a bead blaster run by compressed air to clean parts with. it is a large metal box you stand in front of, put your hands and arms into through some rubber arm sleeves and rubber gloves. their is a gun inside the case and you put your parts in the box and blast them to a matte finish and complete clean and scratch free. pay the owner a small fee for letting you do this or they can do it for you. as to your muzzle of your barrel, tap a tappered wooden dowel into it so the bore doesnt get harmed. now as to the method of finishing. you dont want the wife in the kitchen with you be in their alone. you need a glass pie plate that can take oven heat, you need a big pot to boil the parts on top of the stove. dont use a good cooking pot, find a pot big enough for the job that is old at a used stuff store. (side bar, i just had to leave the computer to break up my daughters two huge tom cats.man do they go at it sometimes. they really dont like each other. they are still growling at each other) so much for that. turn your oven on to 225, put all the pistol parts in the glass pie plate and put in the oven. leave them their until they are oven temp the same. use oven mit to set the plate on top of the stove. have your bueing or what agent ready in a glass bowl. use a few cotton swabs to keep applying the agent to the metal until it stops sizzeling.if you cant get a sizzel turn up the temp until you do. the agent must sizzel. i have a large wooden twiezer to move the parts around. dont burn you fingers. if the cotton patches get bad, change them to clean new ones. do this several times in fact at least a dozen times or more. i never card the parts and they always turn out perfect. by now have the big pot full of water and boiling real good and to the water and a generous amount of baking soda. after a dozen or so applications reheat the parts again and when they are place them in to boiling water. boil at least 30 min. or more do it for a hour is better. keep adding water so the pot does not go dry. now when the parts are boiled good put them in the sink and with a bristle bush that has none metal bristles under warm water brush the parts until all the agent is of them, it wont be hard or long in doing it. look at them, some metal takes a couple of these procedures repeated to get what you want. bet it will be good the first time. now you have to cure the parts for a day. mix penetrating oil and real paste wax like for good hard wood floors or tables before hand. rub that into the finished metal parts and barrel. keep doing it ever so often. do that all day. when you go to bed do it again. cover with paper towels and when get up the next morning wipe the parts and barrel off and their your are, it will turn out very very nice for you. now how to do a rifle barrel in your oven. first of all never ever and i will get flack on this for sure use a heating torch on you rifle barrel. do you know how many novices have have bent a nice expensive rifle barrel with a torch. some will look like a horse shoe. dont use a heat gun either, that was a you tube brain fart. use your oven. a torch should be used by aver experienced gun smith and no one else. this is how you make your oven stay on when the door is a little open. thir is a little push button that disengages when the door is open. i cut a piece of wood so when the door was open a little and the wood was between the door and the button the oven stayed on. take all racks out of the oven, dont do this in a greasy ovem, clean the oven grease free for a rifle barrel. your oven is bare and clean. put the rifle barrels muzzle in one corner and the other end sticking out of the oven at the other corner. heat at at least 225 until the meats sizzles some. with a big fat COTTON mit take the barrel out of the stoves oven before hand you have placed two wooden two by fours on top of the stove one on each side. cover the hot part in the liquid you have to treating the barrel and then reverse the barrel so the cooler end is in the oven. do each end many times. remember to bead blast this longer barrel if you can before hand also. now you cant put a rifle barrel in a pot to boil it so this is what you do. before hand buy a length of 3 inch pvc pipe about 6 inches longer than your barrel. buy a end cap and glue it on one end. set it in a corner in your kitchen with the open end up. put a cement block in front of it so it does not side and go all over the floor and you with boiling hot water in it. be very careful and dont let kids be with you when you do this last part. as your treating the barrel, keep boiling water with the soda in it and pouring into the pvc pipe. it will stay hot inside pipe. fill up the pipe almost. when your done treating the barrel and tie a cotton cord to the tang or what ever and lower into the pipe, cover with a wash cloth and leave it in their a hour or more. when you take it out clean it good as the other parts and oil oil oil with penetrating oil and a little floor wax. if you can figure out how to boil it another way, please let us all know. ive thought about a chicken feed trough from the farm store heated by a gas torch. my way makes a really good finish on the barrel. dont be afraid to do it twice if it needs it. now we will hear from every one who does it another way and if they get good results, it is a good way. im sure a couple of guys will come to this that make the room cold when they walk into a room. but that is america and free speech.