I generally use a dummy round to get overall length and usually set the projectile in about a mill or two more and try them out . Tikkas limit you to the mag length as do other box mag rifles.
As Micky Duck said once your die is set for seating and is where you want it all projectiles should be OK, longer projectiles will seat deeper in the case.
The only thing I did notice the other day was I seated the 200gr ELD X using the same setting as for the 180 gr Noslar BT and when I tried them out they were hard to chamber. I think the shape or Ogive was different to the Noslar and the projectile was engaging the lands. The next lot I loaded up I seated them in about 1.5 mm more and they fit fine now. ( still need to check for accuracy but should be ok for a hunting round)
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