Are you asking what is the outside diameter of the sabot in relation to the bore of the rifle?

I think that will vary from sabot to sabot. All I can sayis I have found the .451 diameter bullets tend to load easier then the .452 diameter. If your Omega is not a tight bore hard loader, I think you will like the way the 300 grain Barnes Expanders shoot. Out of my Knight rifles they are a very accurate projectile. I just hate their price.

In my Thompson Center rifles I have found the Shockwaves to be the best projectile for my rifle. I was surprised when I read posts that the Shockwaves are hard to load. Now I admit the first time I loaded a Hornady SST (same bullet as theShockwave)and a harvester sabot I broke my short starter trying to push it into the bore. So sabots can make all the difference in the world.

Sabotloader and Triple Se7en are the people I turn to when I have a sabot problem and they always have the right answer...

Good luck with your rifle and the weather...