heavy .452 bullets?

[smokemaker]

I've got a T/C Omega in .50 and I want to try heavy (450 to 500 grains) .45 bullets in MMP sabots, but much above 350 grains the bullets go to .458, and the sabots only fit .452 bullets. Anybody know of a maker of heavy .452's, or do I need to get a sizing die and run .458's thru?
Any suggestions would be appreciated.
Thanks friends.
Jeff

 

[4v50 Gary]

Try Rapine Bullet mould company in So. Greensburg, PA.