I shot over 8 years HFT with a standard 30/30 ret.
Aim points all depend on how high the scope is above the bore.
Mine was on a springer and about 1.5 inches above the bore on medium mounts.
Aim points ... very basically ... 0.177 780fps 8.4gr pellet. @ 9x.
35 yard zero ... aim bang on with cross hairs.
40 yards ... aim cross hairs top of kill.
45 yards ... aim top of bottom bar.
@ 15 yards to 30 yards cross hairs on bottom of kill ( poi will be between about half way between cross hairs and bottom of top bar and a quarter up from cross hairs ).
13 back on zero ... aim bang on.
10 to 12 ... aim top of kill.
8 and 9 were a bit tricky as you practise and work out where on the thick bottom bar you had to aim. It was roughly just below bottom bar on centre of kill for 9 and about half the distance of the thin line again down bottom bar for 8.
Just a rough guide for you ... always best to spend the time on the practice range and work out what's best for you and your set up.