Problem # 3
Ranges are so short that it probably doesn't matter. After a decade with a pistol I can probably hit a moving target more often and at greater range with a cricket ball than a pistol round .. but give me a carbine with medium magnification and I'll take your head off up to 200 meters' 4 times in 5. In short, pistols are really inaccurate, grenades are probably slightly more accurate before they bounce and crazy after that, rifles are great- especially if you can rest them on something and things with a HUD are more accurate again. And everything except flame throwers, pistols and grenades should hit the back of any board you can fit in your house at 28mm scale.