While I agree with you that Santorum's website does seem a little "hunter" intensive, his views on the 2nd Amendment at large are fairly robust, and IMHO, it's to his own detriment that he doesn't better advertise them.
Santorum's responses on the GOA Survey pretty much speak for themselves:
I agree that even for Newtron Bombers, Santorum stands as a figure to play prominently in the coming GOP sweep that Obama has long been due to be swept over by.
Thinking beyond FR’s internal debates, how would it be possible to prevail upon Santorum to open his official 2nd amendment views beyond the hunter cousins of his miner redneck family? I don’t begrudge a wiser Santorum.
I must say, Santorum’s answers on #10 and #14 do sound potentially promising, as they touch on private arms issues that transcend hunting. But they are still issues that hassle hunters too (Uncle Sam and the hunters may not agree on what a “sporting” arm is, for example). I hope it’s only a matter of his website being out of date, if he really has opened his views to the self defense crowd.