One for MB , Vics vapour rub

[Midnitemo]

IMHO not much use in the real world as its an inaccurate science , no consistency from shot to shot so you would never be able to zero the sights , plus you're technically breaking the law every time you successfully get a combustion , I should expect it will increase wear and hasten a f ailiure as there has to be a large pressure spike way in excess of the design pressure , just a gimmick.