I agree 100%
I've used both of these. Yeas ago I used K.O. slug in my smoothbore but ever since I bought an 835 with a rifled barrel I've shot the BRI sabot. I started back when Federal offered them and now it's Winchester.
2 3/4 Remington copper solid sabot.
Check my zero at camp $2, go kill a deer another $2, most of the time. If I have to go track a deer I will chamber a cheaper slug.
I have no idea if this is the best cartrige. I used the solid copper sabot on my first hunt and killed a buck. If I could remember what socks I was wearing I would wear those too.
Superstitious I am.