Could be a tough search, given that Triton is no longer in business for factory ammo and now only Double Tap and Underwood are offering factory loadings (which won't be cheap).
In your shoes, I would start with low-end 10mm data and work up using a chronograph, looking for 1250-1600 fps with 135-165 grain bullets and no ore than 1300 with 200 grainers.