atse,
The primer pockets on Lapua brass are sometimes deeper than other brass. Some primer tools may not seat the primer all the way down, resulting in a misfire.
Lefty
I don't use a priming tool. I individually seat each one on the press. Upon examination of the cartridge before I threw it down the hill( last time on these brass) the primer was flush just like all the others. The pockets are a tad deeper than other brass.
