I've got a Sako 75 chambered for .300 Weatherby. I'm thinking of having it rebarreled by Pac-Nor to one of the following chamberings: .300 Win, .300 RUM, or .300 Wby without the freebore. I would like to know if anyone has any experience with the .300 Weatherby without freebore. I want to be able to play with seating depth and you can't with a standard .300 Wby. Do you have to back off the powder charge and how much does velocity suffer if you do? Is there a potential accuracy advantage without the freebore? The reason I'm thinking of staying with the .300 Wby is because I won't have to buy new dies or brass. I must admit, however, the .300 RUM ballistics look mighty attractive.