It looks like Hornady and Speer both still make 170-grain bullets. Go on e-bay ro one of the gun auction sites to see if you can pick some up reasonably. Or, go to GRAF'S, MIDWAY, Midsouth, Cabela's, etc., and order some. You can also order brass this way.

For brass, you can always use .30/30 cases necked up to hold .321" bullets.

If you feel like casting some bullets, you can get moulds for .321"-.323" bullets in a number of different weights, if you want to shoot something other than a 170-grain bullet.

Actually, in .32 Win. Special, there is no need for jacketed bullets, as the cast ones can be shot at over 2200 FPS with no problems at all.......

(The only caribou I ever shot was shot at around 420 yards with a .308 Norma Magnum. If you use a.32 Spec. for caribou, I hope you can sneak up to within bow hunting range! They are often shot at pretty good distances, and the .32 Spec. is a woods-distance rifle, generally speaking...)