| Havin Frost |
I believe the issue is that Small Arms, regardless of your feat and the strength of your experience, simply have less damage potential to give. It doesn't matter how much training you have, wielding a small arm with maximum proficiency and skill will never allow you to get as much out of it as you can say, with a shotgun, flamer, or explosive projectile weapon.
I would be all for an "Advanced Small Arms" weapons category. Just as Advanced Melee Weapons represent future-tech versions of basically medieval weaponry, and thus, have better damage.
Stuff like the Noisy Cricket from the MiB film franchise. Looks like a Small Arm, requires advanced training to use with accuracy and without injury; much better damage as a result.