Oops, I should have explained that better.

The measurement you want to grab is the length of the shank. The shank is the full diameter section of the bullet directly behind the ogive. This can be a hard measurement to accurately get with calipers alone (use mic to mark the transition), but if you can get it to within .010 then that will be close enough. Then I'll need your intended COAL. Between the shank length, bullet length, and COAL the rest of the values are calculated.