Your plan would only work for slug shotguns (which already work that way). Most shotguns in games are like real life and shoot out loads of small shot in a spread pattern. Your real problem is not the weapon but how you play against players who use shotguns. THINK. What are the shotgun's strengths and how not to play into them. What are the shotgun's weaknesses and how to use them. Keep your distance. Do not run at someone. If someone runs at you back off or disengage to fight when you do have distance. Stay out of CQB areas or places where people are camping. Bait them out. Adapt...…. Improvise........ Overcome.