I think projectile weapons are in a got spot currently. I think they've got about the right amount if ammo, at a decent price and that they're generally speaking superior to energy counterparts. In short, I think the beta balancing that took place worked.
I agree that the weapons themselves are decently priced to buy and in terms of damage are well balanced to the energy weapons, I also agree that magazine size is good and balanced. What isn't balanced is that you have to dock at a station every 5-15 minutes if you plan on using projectiles or missiles.