Since the major limitation of the backburner is it's effective inability to airblast, here's how this guy should work to make a good set...

Pros:
+50% tighter spread
Can destroy (NOT reflect) projectiles
+10% chance to ignite on player hit

Cons:
-25% damage
-50% clip size (maybe -33%? Either three or four shells, at any rate)
-10% damage against already burning players

Something like the above, at any rate. The backburner is a good weapon, but its limited because one of the most valuable abilities the Pyro has is airblasting. This would balance that without being OP given that it would take a large degree of skill to accurately hit projectiles out of the air given the tighter spread. In addition, it makes it an interesting choice in general because, while you lose some damage overall, you gain accuracy at long range.

Any ideas?