I do not wake up in a new world everyday, if starting over everyday can be avoided, avoid the practice.
I am a big fan of the running start, I do not use up all the space available, but, it is more than nice to know the length of the chamber from the bolt face to the rifling, once the length has been (discovered?) determined it is not necessary to find over and over and over, it does not move, it has a taper and is between the large and small diameter of the barrel (30/06 is between .300 and .308).
I do not smoke the bullet, I do not shred the mouth of the case, I am a big fan of bullet hold (something others call neck tension), I want all the bullet hold I can get, back to starting over everyday, once the contact between the bullet and rifling has been determined it is not necessary to discover it ever day.
I drill the flash hole/primer pocket out to a diameter that accommodates a cleaning rod, I then size the case and seat a bullet that is to be loaded in the sized case, does not matter as to length, just make sure the bullet is seated short, then I remove the bolt, chamber the test case then use a cleaning rod to push the bullet out of the case until it hits the rifling, the rifling will imprint on the case, I then remove the case and use it as a transfer, the bullet hold of the neck (neck tension) will allow the reloader to use the test case to to set up their seater die to .000 of the lands, for those skilled in the use of tools like the height gage, depth gage and dial caliper can then determine the height of the seater stem to .000 as in off the lands, then adjust the seater stem height to seat 'off the lands. With bullet hold and when using the same bullet the test case can be used to .000 the seater stem height above the die. This method is a smart way to save money, the smart reloader that is skilled in the use of tools does not need the MICRO adjusters on seater dies.
Those skilled in the use of tools can determine the contact point between the bullet and rifling, and as I have said my favorite tool is the DATUM, others call it datum line.
I am a fan of the jump start and bullet hold and turning my seater dies into micro adjusters.
It is nice to know the distance to the lands, it sounds cool when someone says, "I seat my bullets .002 off the lands" I can say the same thing, but I don't, I want my bullet to have a running start, and when I drill the primer pocket/flash hole to avoid starting over the next day I drill the primer pocket/flash hole on at least 10 cases.
F. Guffey