Paladin: I bought my 17rd mags from CDNN and each mag came with a mag loader - which you will definitely need. Even with the mag loader I couldn't load more than 15rds. at first. I have finally got one mag to take 17rds.
If you visit
http://www.fnhipower.com/ they have an online reproduction of the 1969 manual for the T-series Browning Hi-Power. That should be close enought to your T-series to help (even though it is 5 years later)