[{HVY-E}Jinxx]

The schrapnel hitting the plane sounds too much like some kind of Starwars Laser blast. The explosions are nice though and if memory serves came with the Battlesounds V2 mod about 4mos ago.

You may get a better effect if you take and make a box with different sides. 1 cardboard, 1 alluminium and 1 wood. Then put a mic in the box and throw some gravel at it from a distance of about 10 ft or so. Should give you the effect you're looking for.