Thanks for the advice. I have had the standard filters protect a lens before from every day things but never from a BB. At 20 bucks each I am a little hesitant to do much testing.
I was hoping that some company out there made a filter with "ballistic" protection, but have not been able to find one.
I have also heard that using a lens hood offers just that much more protection.
"And gentlemen in England now a-bed Shall think themselves accursed they were not here, And hold their manhoods cheap whiles any speaks That fought with us upon Saint Crispin's day."
William Shakespeare Henry V.