There is a lot of discussion about how well a gun groups. I recall seeing somewhere a discussion of the realistic grouping one should look for but I cant find anymore. If one considers a basic plains game hunt, as it is what I will do first, is there a threshold to consider in determining whether the gun is accurate enough for the adventure? On a related point, when siting in for maximum point blank range what size vitals do you assume (6" was my thought)? For example, I was working with 2" high at 100 yards and I note for a maximum point blank range with 180gr would be about 260 yards (calculation courtesy of Nikon Spot On program). So, if the spread of the bullets at 100 yards is about 3" is one safe to point and shoot with this load out to the maximum point blank range for a vital zone of about 6"? Or, should I assume a larger/smaller vital zone when considering spread and maximum? Am I wasting my time trying to understand this? If they had asked us these types of questions in math class I probably would have been a more attentive student! I am presently experimenting with various factory ammo but do plan to switch to reloading in the near future. However, some practical advice would prevent me from driving myself batty trying to create one ragged hole at 100 yards!