Program: 30684
Project: 30684
Buggy source:
@Override public ItemStack onItemRightClick(ItemStack item,World w,EntityPlayer p){
  if (this.getAECurrentPower(item) > 1600) {
    int shots=1;
    CellUpgrades cu=(CellUpgrades)getUpgradesInventory(item);
    if (cu != null)     shots+=cu.getInstalledUpgrades(Upgrades.SPEED);
    IMEInventory inv=AEApi.instance().registries().cell().getCellInventory(item,StorageChannel.ITEMS);
    if (inv != null) {
      IItemList itemList=inv.getAvailableItems(AEApi.instance().storage().createItemList());
      IAEStack aeammo=itemList.getFirstItem();
      if (aeammo instanceof IAEItemStack) {
        shots=Math.min(shots,(int)aeammo.getStackSize());
        for (int sh=0; sh < shots; sh++) {
          extractAEPower(item,1600);
          if (Platform.isClient())           return item;
          aeammo.setStackSize(1);
          ItemStack ammo=((IAEItemStack)aeammo).getItemStack();
          if (ammo == null)           return item;
          ammo.stackSize=1;
          aeammo=inv.extractItems(aeammo,Actionable.MODULATE,new PlayerSource(p,null));
          if (aeammo == null)           return item;
          float f=1.0F;
          float f1=p.prevRotationPitch + (p.rotationPitch - p.prevRotationPitch) * f;
          float f2=p.prevRotationYaw + (p.rotationYaw - p.prevRotationYaw) * f;
          double d0=p.prevPosX + (p.posX - p.prevPosX) * (double)f;
          double d1=p.prevPosY + (p.posY - p.prevPosY) * (double)f + 1.62D - (double)p.yOffset;
          double d2=p.prevPosZ + (p.posZ - p.prevPosZ) * (double)f;
          Vec3 vec3=Vec3.createVectorHelper(d0,d1,d2);
          float f3=MathHelper.cos(-f2 * 0.017453292F - (float)Math.PI);
          float f4=MathHelper.sin(-f2 * 0.017453292F - (float)Math.PI);
          float f5=-MathHelper.cos(-f1 * 0.017453292F);
          float f6=MathHelper.sin(-f1 * 0.017453292F);
          float f7=f4 * f5;
          float f8=f3 * f5;
          double d3=32.0D;
          Vec3 vec31=vec3.addVector((double)f7 * d3,(double)f6 * d3,(double)f8 * d3);
          Vec3 direction=vec3.createVectorHelper((double)f7 * d3,(double)f6 * d3,(double)f8 * d3);
          float penitration=AEApi.instance().registries().matterCannon().getPenetration(ammo);
          if (penitration <= 0) {
            ItemStack type=((IAEItemStack)aeammo).getItemStack();
            if (type.getItem() instanceof ItemBlock) {
            }
 else             if (type.getItem() instanceof ItemPaintBall) {
            }
            return item;
          }
 else {
            standardAmmo(penitration,w,p,vec3,vec31,direction,d0,d1,d2);
          }
        }
      }
 else {
        if (Platform.isServer())         p.addChatMessage(PlayerMessages.AmmoDepleted.get());
        return item;
      }
    }
  }
  return item;
}

Fixed version (ground truth):
@Override public ItemStack onItemRightClick(ItemStack item,World w,EntityPlayer p){
  if (this.getAECurrentPower(item) > 1600) {
    int shots=1;
    CellUpgrades cu=(CellUpgrades)getUpgradesInventory(item);
    if (cu != null)     shots+=cu.getInstalledUpgrades(Upgrades.SPEED);
    IMEInventory inv=AEApi.instance().registries().cell().getCellInventory(item,StorageChannel.ITEMS);
    if (inv != null) {
      IItemList itemList=inv.getAvailableItems(AEApi.instance().storage().createItemList());
      IAEStack aeammo=itemList.getFirstItem();
      if (aeammo instanceof IAEItemStack) {
        shots=Math.min(shots,(int)aeammo.getStackSize());
        for (int sh=0; sh < shots; sh++) {
          extractAEPower(item,1600);
          if (Platform.isClient())           return item;
          aeammo.setStackSize(1);
          ItemStack ammo=((IAEItemStack)aeammo).getItemStack();
          if (ammo == null)           return item;
          ammo.stackSize=1;
          aeammo=inv.extractItems(aeammo,Actionable.MODULATE,new PlayerSource(p,null));
          if (aeammo == null)           return item;
          float f=1.0F;
          float f1=p.prevRotationPitch + (p.rotationPitch - p.prevRotationPitch) * f;
          float f2=p.prevRotationYaw + (p.rotationYaw - p.prevRotationYaw) * f;
          double d0=p.prevPosX + (p.posX - p.prevPosX) * (double)f;
          double d1=p.prevPosY + (p.posY - p.prevPosY) * (double)f + 1.62D - (double)p.yOffset;
          double d2=p.prevPosZ + (p.posZ - p.prevPosZ) * (double)f;
          Vec3 vec3=Vec3.createVectorHelper(d0,d1,d2);
          float f3=MathHelper.cos(-f2 * 0.017453292F - (float)Math.PI);
          float f4=MathHelper.sin(-f2 * 0.017453292F - (float)Math.PI);
          float f5=-MathHelper.cos(-f1 * 0.017453292F);
          float f6=MathHelper.sin(-f1 * 0.017453292F);
          float f7=f4 * f5;
          float f8=f3 * f5;
          double d3=32.0D;
          Vec3 vec31=vec3.addVector((double)f7 * d3,(double)f6 * d3,(double)f8 * d3);
          Vec3 direction=Vec3.createVectorHelper((double)f7 * d3,(double)f6 * d3,(double)f8 * d3);
          float penitration=AEApi.instance().registries().matterCannon().getPenetration(ammo);
          if (penitration <= 0) {
            ItemStack type=((IAEItemStack)aeammo).getItemStack();
            if (type.getItem() instanceof ItemBlock) {
            }
 else             if (type.getItem() instanceof ItemPaintBall) {
            }
            return item;
          }
 else {
            standardAmmo(penitration,w,p,vec3,vec31,direction,d0,d1,d2);
          }
        }
      }
 else {
        if (Platform.isServer())         p.addChatMessage(PlayerMessages.AmmoDepleted.get());
        return item;
      }
    }
  }
  return item;
}