Old school ballistics.
If the bullet drops out any mold and measures .311 to .314 dia with a caliper across its grease groves. No further resizing for your 30-wcf is required. Just snap on a G/c for high velocity loading's Seat and shoot.. Low velocities under 1000 fps. No need to gas/check period. Just make sure your using Clip on Wheel Weight as your molds lead in both high & low speed categories.