RE: Mech's and shoot through Mesh
Personally, I have shot several mech's through mesh. The ones I have tried are:
Eastman Silvertip through a double bull- worked just fine.
Eastman Silvertip through a Eastman carbon venture- fine
Eastman ST3 cut on contact mech through a carbon venture-fine
and a Rocket Steelhead through the Carbon venture it also worked fine.
Personally I don't think you will have any problems. None of my heads opened up and there was no effect at 40 yards. Good Luck