Comments of chapter undefined of When Doomsday Comes, I Can Upgrade My Refuge Infinitely

OK, the author really doesn't know anything about guns. Why has he written the main character be better at shooting than a special forces marksman but so inexperienced that he does not remember to reload a partial clip? ANY person who has played any game with guns learned this. Also, a desert eagle has a ferocious kick and if you tried to fire 15 rounds rapid fire you'd probably break your wrist if the gun didn't just fly out of your hand by round 3.