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Are you talking about these sabots? I looked at those and my understanding is that they are an "easy loading" version of the Hornady's I purchased. Not to hijack my own thread but, What are the most important factors in developing an accurate muzzle loading load? I reload for revolver and rifle so I see loads that cloverleaf the target and loads that don't even come close. Is it the powder (grain weight or type), the bullet, or the sabot? I'm sure all factor in but I think the sabot is doing a lot more as it goes down the barrel than the bullet is. My buddy used to shoot on a league that required side locks and patched round ball only. He said they played with powder weight more than anything. As he increased the powder grain weight he could watch the groups tighten up until he went past the sweet spot and the groups would get progressively worse.