Re: Weatherby and the No.1
The freebore is just about what you measured it to be = 0.325
You can jam the bullets if you wish but you will have to start very low on the powder charge and work you way up to where you believe you are at max for that particular seating depth. When the primers fall out you are over max - that is the good thing about Norma brass- it will tell you when your pressures are too high.
If I was you, I would approach things with the bullet seated out as far as possible and a very light load. Then I would slowly increase the load until I got to max. Then I would decrease the seating depth and increase the load incrementally one variable at a time looking for best velocity and accuracy.
The Smokin Fur Rifle Club