OK, so loading handguns, COAL is pretty easy to manage, since the brass on straight walled cartridges doesn't really expand (at least in my exprience).
But, Rifle brass does expand. So, if I'm looking at load data what is the brass length that COAL is based on?
I'm looking at the spec for 5.56 and it says the case length should be 44.7 mm. My once fired, sized brass is measuring 44.71, but my Lee trimming tool looks like the brass would need to be about 2mm longer before it would bite.
Where did I go into the weeds?
But, Rifle brass does expand. So, if I'm looking at load data what is the brass length that COAL is based on?
I'm looking at the spec for 5.56 and it says the case length should be 44.7 mm. My once fired, sized brass is measuring 44.71, but my Lee trimming tool looks like the brass would need to be about 2mm longer before it would bite.
Where did I go into the weeds?