Ruger4Me,.... The oldest "recipe" for brown'n/blue'n , is with good old-fashion "rust". Tho I've never "blued" a barrel (or, other hardware) with "rust" and cain't comment on thet proccedure, 'cept "metalic salts" are involved.
Brown'n a barrel with rust is easy to do, tho this proceedure is rather time-consume'n most fella's find the final "finish" well worth the extra time involved.
INGREDIENTS for "modern-old-time" brown'n (say "what":?: ) are:....
1- box of plywood or other suitable boards, and 'bout 12" square and long enuff for a barrel/breech-plug, stand'n upright, and with a hinged door on the side.
1- 40-50 watt light bulb fastened to the top of the box (on the inside
) when box is stand'n "on end".
1- small pan of "water" located at the "bottom" of the box.
1- bottle of "vinegar".
1- pad of #0000 steel-wool.
1- small can of "boiled linseed oil".
COOK"N TIME:.....
Throughly "oil" (with good gun-oil) the bore of the barrel, then "plug all openings" (for and aft) of the barrel.
Wipe the (outside of the) barrel down throughly with vinegar, and placed in the "box" with the "light on".
Remove from "box" after the first 24 hours, and rub with #0000 steel-wool, then place the barrel back into the "box".
Repeat proceedure "as needed" for the desired "brown" (rust).
After the desired "brown" has ben reached, rub the barrel down "vigorously" with a cotton cloth and small amounts of boiled linseed oil,... (when "dry", this will prevent further "rust'n").
Yore barrel is now "brown-finished", and if you have applyed the same proceedure to the "hardware" for yore rifle, at the same time as the "barrel",... ALL metal should be "gorgeous"!!
Good luck!!.... the above recipe requires a period of 4-5 days to complete, and is definitly well worth the time to do properly!! :toast: