Carl,
I always try to index my sabots for better consistency by figuring out where the lands will bear fully on the petals. Now this is easy with a 8 land and groove barrel, and a 4 petal sabot. Once you figure out which way your rifling is going to move accross the petals, try to line up one land wher it starts about where the petal meets the base, it will angle accross the petal to where the land next to it runs out at the opposite end and side of the petal. Some of them have a huge gap between petals so you will have to figure out where it works best.
Now with that said, I have an older MK-85 and a White G-series that have only six lands and grooves. I also have a White M-98 Elite that has a Bo Clerke barrel with 7 lands and grooves. You can still figure out the best place to index these where the sabot petals are maximized.
For you non-believers, next time you shoot load one sabot where two lands ride on each petal, then load one where the four lands are riding right down the split and the other four dead center in the petal. You will imediately notice how easy the last one loads. This is why people say some load very hard and then one goes in real easy. I guarantee you will shoot more accurately and get more consistant velocities if you optimize your sabots.
Once you figure it out, it is real easy to repeat. It is easier with a rifle that has a front site, my Disc Elite is a little tougher.
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