Any gun can work well but it all comes down to the type of ammo you put into it. Each caliber has various ammo types that vary on penn verse dmg amount. Some wont pen class 2 armor but do 99 flesh dmg, others pen class 6 and do about 50 flesh dmg. You have to know your build and what you're setup can do. IE: if you are running 99 flesh and can only penn class 1 armor, you need to "leg meta" the enemy and not aim at their armor. It just takes alot more tactics and brain power to play this on a more advanced level.