i canned a bunch up from this past summer myself. I did mine the day after I caught mine.
110 minutes at 11lbs. I fill the jars to within about 1/2 - 1 inch of the lid.
My pressure cooker reciepe book said to bake the tuna first, but i just stuck the meat in there raw, and it came out awesome. Its the best canned tuna you will ever have.
I ate a bunch of loins fresh, cooked em on the bbq, and a little Mesquette Marinade... MMMM.
6 months and counting and I'll be out there getting some more!!!
Tom... did you read that... only 6 months to go

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