If i am not mistaken, most target firearms are single shot, so the simplicity of design is taken down to the barest means. No receiver for a magazine, little need for more than a breech, bolt firing pin, sear and trigger. When you then consider that most, if not all high grade target arms on the competitive level are custom made for each individual user, the grips/handholds are only going to be in one place, and there is no need for anything more than what is needed. Add in that these are extremely robust (thousands upon thousands of rounds being fired), yet super light for being used over long periods of training & competitiom. Everything that is removed for weight savings gives these ultra-skeletonized looks. So those ounces and grams removed can mean the difference.