My main actually swears by heavy clip... I dont argue, b/c he hits what he aims for
It's true, I like heavy clip on the flare gun. Makes it a bit tricky to lead targets correctly sometimes, but flares are best used when you're within spitting distance anyway. At close range, the perfect accuracy of heavy clip lets you reliably snipe components. Even with Lesmok, it's harder to snipe components reliably than with Heavy Clip.
Even with heavy clip, there isn't much drop. At max range with heavy, the flare only drops to about the bottom dot on the crosshair.