Have you ever tried the "Yellow" high pressure crushed rib sabot made for boat-tailed bullets by Harvester. I use them with the Barnes 250 gr TMZ bullet "throw the Barnes sabot in the trash" and they shoot the best I have ever tested in my 50 cal Prohunter. I can get under a 2" group at 200 yards with my load consistently and I have tried more sabots than I care to admit. I believe they make the same sabot for the flat-base bullets as well. They are like $8.95 for a 50 pack through Harvester.

Besides the accuracy improvement the also drop off from the bullet about 9 yards from the barrel and form a buttercup shape almost like a parachute and never a broken or bent pedal. Every sabot looks the very same as the last. My load consist of 110 grains of Blackhorn 209, Winchester 209 "shotshell" primer with the Barnes bullet. Very, very accurate out of my rifle.

Just thought I'd share that with you all. Give them a try if you haven't yet.