philip_grubaugh
Hornady sabots are really built for the Knight size bore. Your Omega and most TC bores are tighter (smaller) than the Knight bore. if you are using 45 cal bulletsyou can switch your Hornady sabots for MMP-HPH-24 or a Harvester regualar black sabot + Harvester even makes one a little thinner a "crush rib" - do not hink you would need that one.
What bullet are you shooting?
Here is the MMP site and some information...
http://www.mmpsabots.com/
HPH Sabots are designed and manufactured to enhance accuracy with hot
powder charges. In .50 caliber rifles and charges exceeding 100 grains of
Black powder or equivalent of Pyrodex or the higher or hotter powder charges
recommended by Savage for the 10ML-II.
If you experience accuracy problems with our standard sabots and hot
charges, the HPH Series is the sabot of choice for you.
The big difference between Black HPH12 and HPH24 is HPH24 is .002" smaller in loaded diameter. Loaded diameter is a sabot with a bullet inserted. With a .452 diameter bullet the HPH12 is .507-.508" diameter, the HPH24 is .505"-.506" diameter. If you have a tight loading rifle you may want to choose the HPH24. However, if you shoot a Savage muzzleloader with smokeless powder the HPH24 may not fit tight enough to consistently ignite the smokeless powder. The HPH12 is the stronger of the two sabots although both usually shoot very well with hot charges.
The Hornady sabot you are shooting is most likely a HPH-12 for a .507/.508. if you look the 24 is thinner and will go down a tighter bore.
All of this information is relevent for 45 cal bullets being shot form a 50 cal ML - Since you didn't say which caliber or which bullet this is all a guess right now.
hope this helps - ask additional question if you need to...