desporterizer said:
I am curios mudpuppy, did you clean your guns after firing or leave the residue in the bore? What were the ambient humidity conditions at the time the residue was in the bore? What condition are your bores in?.
Rifles were not cleaned , residue was left in the bore, all my firearms are stored in a gun room that has it's ventilation connected to the house system, the house is maintained at ~30-35% relative humidity. The bores of the good ones I would rate vg to exc, I do have one that looks like 20 miles of bad road and it has not been cleaned in over six months and has had 200+ rounds of the Hungarian ball through it.
desporterizer said:
The corrosion is supposed to be as a result of the hydroscopic nature of the primer residue & if that is the case the lower the ambient humidity the longer it will take to rust. The last one is as a result of the fact that a smooth bore is easier to clean than a rough one, leaving less chance of corrosive stuff left in the bore. I also dont know if the powder interacts with the primer compounds to make it more corrosive as I have plate tested turk 8mm from the 40's ( no way thats not corrosive) & had no rust after two months on the shop wall( it is winter though, not as much humidity).
This is why I do my plate testing under controlled conditions. I take my test plate degrease it, clean with a wire wheel, degrease again, clean/etch the metal with Naval Jelly(phosphoric acid) rinse, degrease two more times then dry and fire primers into plate (I also burn a small sample of the powder on the plate). I mark a section of the plate as my control area. It is then put in a closed cabinet (not airtight) in the gun room and monitored for 30 days. If after 30 days there is no sign of corrosion it is put in a sealed environment where I try to maintain a temp of 25C and a relative humidity of 70-80% and monitored for another 30 days. This
will cause rusting on the bare metal, that is why you have a control area, and you compare the primer residue area to the control. If the primer residue was corrosive it should rust sooner and be more agressive than rust in the control area.
There was
no evidence of the Hungarian ball being corrosive.
desporterizer said:
Screw it, I treat all ammo as corrosive & clean after shooting( sometimes as many as 10 guns at a time).
And I will not argue with that point if that is how you like to do it, my only argument here is that people are making claims of
absolute fact that this ammo is corrosive without any supporting evidence to back it up. In the two examples that I have been arguing against there are other variables that could also have caused the corrosion but they have not even been considered. I like to see supported facts not guesses or opinions formed because "I read it on the internet".
I guess if I simply go by the mantra that everything you read on the internet is true my life would be a lot easier!
