There are tables on line that can help you. I forget the name of them. Perhaps someone will chime in.
Offhand, I'd suspect that an inch or two high at 100 yards would give you the maximum point blank range.
If you can't find this chart, then simply take the scope off of a properly sighted in 243 and use it on your 35 rem, the 243 shoots way flatter so you will be good at those longer ranges and you won't waste ammo !
