Just saying that eliminating a variable is a benefit. One less thing to think about in load development. One less thing to go wrong. Sabots must fit the bore properly to shoot well, and can be affected by temperature. There's obviously nothing wrong with sabots, and they are probably the best way to go for shooting longer ranges.

I like bullets on the heavy side for MLs, and I rarely attempt shots at even 100 yds. I also like the fact that they start out at 50 cal, and do seem to expand a bit on deer, yet also reliably give full penetration and a nice exit hole. FPBs are designed to work in a range of 50 cal bore sizes, as the hollow base skirt expands to engage the rifling. If the FPBs didn't shoot well it would be a moot point. But since they are as accurate as I need for my hunting, it's a plus not to have to deal with sabots.