rgmeddn

Oh, and if you're not touching the lands with your starting point then you have to go even longer and find where you do touch them. Sent from my SM-G920V using Tapatalk

I suggest that you go back to the "marker and smoke" process. If you found it to be not helpful, then you were not touching the lands. Try this: seat a bullet tightly at 0.010 longer than what you currently think would be barely touching the lands. Mark around the point of contact with the ogive. Close the bolt gently and if you feel resistance back out and see the marks in the ink/smoke. Seat the bullet 0.001 deeper and repeat. Even when your bolt closes fairly easily, there will be marks in the ink (I have more luck with ink than with smoke, and don't forget to wipe the ink and reapply it). You will find the point where there will be faint marks and then the next time no marks. You have found exactly where your base to ogive is. This is YOUR chamber, YOUR headspace, YOUR cartridge, and YOUR bullet at the cost of a sharpie, one case and one bullet. (Keep it for future use and comparisons.) Unfortunately using OAL introduces the irregularities at the tip of even match grade bullets. Base-to-ogive is the ticket. Sent from my SM-G920V using Tapatalk