Semisane

Are not shooting Bull Shops? I use the .503 thumb start and really am impressed with them. They go down just a it harder than a .452 & HPH24 sabot - certainly tight enoughnot to come off the powder- but they obturate to a very tight fit when the gun goes off.

If you are gonna shot conicals those Bull Shops, or No Excuses, are harde to beat + the 460's have a decent BC for that big a chunk if lead.