Mine is a 1977 without the dimple and it cycles them perfectly without a hitch.This includes the last round.
Just put in a shell with a flat tip first if your that worried about it.
If you havent hit the deer by the time you get to the last shell, chances are sky high it aint gonna matter that its a different bullet then the others.
Ive been using LEs in my Win 94 for the last 5 years and have had the last shell jam once. I just pushed it a bit and it popped out.




























