The reason for the inconsistent OAL isn't in the ogive, it's in the tip of the bullet.
I'll be bet if that guy in the video measured his length with a comparator attached to his caliper to measure to ogive instead of the tip, he wouldn't be having the problems he is describing.
Guy in the video understands that....the seating die isn't seating off of the ogive which is causing the variation when you measure the ogive length of the seated bullets. I noticed this myself with my Forster ultra seater and Berger 300 OTM. Had ogive length variation of up to .006.
The seating die keeps ogive length of 300 SMKs within .001.
This is not true.Your powder charge stands to make the most change in your results.
i can see that, but for a beginning load work up, i could'nt have been more pleased. it clearly gave me a good starting point because they were drasticly different. i could see moving it out to 200-300 if you have similar results at different lengths though. if i have similar results when working up powder charges then i will move them out to further distances.yes but that same load at 100 could be a horrible shooter at even 300 yrds.. thats the reason for shooting longer at first.. I have had a load shoot awesome at 100 yrds... at 300.. 5 inch group.. yes good loads can be produced at 100.. but 200 and 300 will work better .. but like I said just my 2 cents