Hello TheOldMan, I'm not sure if this will help but I was looking at Case, JD, and Cats, with 4-in-1 buckets. You might want to check out my post "Dozers vs 4-in-1 buckets on a crawler loader", because the guys posted a lot of good information that may help you out. It's not "specifically" in regards to a Case 850, but I think you will find some helpful input there, I hope this does help you. Best of luck to you.
JDDozerman