Hi Tombsman. We sight in at 1" hight at 100yrds to cover most hunting distances that tha hummer is capable of. eg 1.5" high @ 100yrds, Zeros the bulls eye of a target at 145yrds, which will be 0.9" high at 50yrds, 0.3" low @ 150yards and 5.5" low @ 200yrds. I found a few shots of mine at I guess 140-160 yards were shooting a little bit high and the rabbits were ducking as the bullet just brushed over them. So I dropped my zero down to 1" high @ 100yrds, to make sure these 140-160yrd shots were slightly lower. There are figures out there that differ slightly from these given. I guess it is done at 100yrds because thats what most ranges have targets set up at. For shooting rabbit sized critters if you hold the cross hairs on the animals vitals at any distance up to 170yrds you should get a hit with out worrying about hold over.A very close shot may be 1 1/2" high and a long shot may be 1 1/2" Low but still in the kill zone. Hope this helps.
Ah now I get the picture basically keeping within a small diameter area, so you roughly know where it is going to impact.
Exactly
It is what is referred to as MPBR = Max Point Blank Range.
In other words. For a given sized lethal zone of an animal, say 2" or 3", you sight in the rifle so that the bullet always hits inside this zone out to the MPBR. Which for the Hummer works out to be around the 160-170yd mark.
As long as you know the bullet will hit in that zone and the range is less than the MPBR. All you have to do is aim for the centre of the lethal zone of the varmint.
For bigger animals and bigger cartridges, the lethal zone will be bigger and the MPBR much longer. So a 223 might be set up for a 3" zone and MPBR of 250yds. It might also be setup for a 5" zone and MPBR of 350yds. A 204 or 22-250 might be setup for a 3" zone but with a MPBR of 350 yds.
So the critter you are targeting and the cartridge you are using both have an affect on your set up and on your MPBR.
