Good morning Hunter,
Thank you for joining our forum-we are happy to have you.
As to your question the 45 Colt reloading info that you are looking at is for the pistols that were designed and built for over 130 years. The original cartridge was designed for black powder, and would push a 250 grain bullet up to 1000 fps, but nowadays it is more in the range of 800 fps. (But mind you a 250 grain slug traveling at 800 fps does have a tendency to get your point across!)
There is additional reloading information for this caliber for modern handguns, such as the Ruger and Contender pistols, and these are at much higher energy levels. The one thing that I do not know is if YOUR pistol was designed with the specifications for the older pistol or if it can handle the newer cartridge pressures.
Once you have that information, you can create loads for your pistol.
Hope this helps; hopefully others will chime in with additional information.
Edit: some resources for you to examine