Have you got a COAL gauge and do you know the max COAL (i.e. ogive touching lands)?
Use the marker pen on bullet method to try and determine it if you haven't got a gauge or can't borrow one....
Type: Posts; User: Flyblown
Have you got a COAL gauge and do you know the max COAL (i.e. ogive touching lands)?
Use the marker pen on bullet method to try and determine it if you haven't got a gauge or can't borrow one....