Originally Posted by trebark
If you pressed the bullet until the rifling left a mark, that's too much pressure. You need to use the lightest pressure and stop when the bullet stops. My guess is your 2.945 is probably closer to 'on the lands'.
Also, be sure that if you measure your dummy case with the comparator, that you measure your loaded rounds the same way. I shoot the 208Amax in my RUM and have found that there is as much as a .004 variance bullet to bullet.
I do use it as you explained and have done with all my rifles with no problems so as I started second guessing myself I took it to the gunsmith just to get a comparison he used all my equipment.
He used my OAL gauge first and could feel the first resistance that I usually use as my measurement then gave the slightest bit more pressure and It went in just like it did for me then he made up dummy round using new projectile a fireformed case then began seating until he got slight rifling marks on projectile.
His measurment just touching the rifling is 3.141 different to my assumed jammed measurement of 3.133 on the orgive and I have been seating at 2.945 as you know so that a big difference now the smith being a bench shooter aswell who reloads also one would assume he knows what hes on about so guess I could carry on where I was or start fresh and work up looking for pressure sighnes.
As Im only single feeding no need to worry about mag length and theres not to much info on OALS on the 208amxes in standard senderos to compare to plenty on the bergers so just see how I go.