That is true enough. I don't buy into the idea that some people claim they shoot better on deer than at targets as I suspect the target represents your true shooting ability laid bare. However, if I don't practise at targets I find it very hard to concentrate and so often find that I can lay down one or two good shots and then a wild one, in fact it isn't always even the 3rd shot that goes wild but usually the first one is OK because my mind is on the job. I could search for all sorts of excuses about barrels heating up and gusts of wind and so on but my feeling is that I just don't have the required concentration for it. After a bit of practise there is usually a marked improvement and on a day I'm feeling relaxed and the eyesight is good I suddenly find that all the problems with barrels heating up and gusts of wind just vanish and I can shoot reasonable, for me, groups.