[jack404]

ok dissolve the sulfide powder in the acid

then the zinc and proceed as normal , rule of thumb , dissolve sulfides before zinc , oxides after zinc never use oxides and sulfides , the park will be bad and lift ..

do a test on any non standard mixes , get a block of the same grade steel temper it and park it to see how long you want to leave it to get the colour you want

you can remove the finish on the block and redo as many times as you want , but you cannot guess the finished colour while its in the tank ,

its gotta be dried and oiled to see final colour and once oiled it cant be returned to the tank unless re cleaned

its a pain but you can do 6-8 tests in a morning easy

start about 8 minutes and go up from there ( do 2-3 minute tests starting at 8 then 11 then 14 etc )

make wooden plugs for muzzle and chamber , hammer in so it seals and drill and hammer a nail or screw into the plug and hang by the nail or screw in the tank ... that way you get no marks from where its rested

dont ground the object thats being parked , make sure its isolated

good luck !!