i have a bsa huntsman scope on my .308 and the recoil has knocked the front lens a little loose do you guys think that will mess up my zero and is there anyway to fix this with out sending it back to manufacturer

Some Huntsman scopes have a limited lifetime warranty, some only a year. Assuming you can, I would send it back. I think a loose lense will almost definitely effect your POA, especially at greater ranges.

If it were me, I'd get rid of the whole scope. BSA's are not high on my "want list". Sorry.