Those ports do work!
I have the FA SA .454 and load them with Freedom arms loading data.
My load is underlined, I am at 37.5 grains.
http://www.freedomarms.com/loading.html
I have not fired mine with one hand and just may not.
Before hunting season this past fall I would shoot it 10-15 rounds 3-4 times a week and one day while shooting from a rest at 100 yds I came away with a deep bruse to my palm. It is tender yet but that has a lot to do with the 3 shots I took during deer season. The 1st was a little lower in the front shoulder than I wanted and the next one missed with a 40 yard neck shot to anchor it, then the 3rd hit the mark.
http://thefiringline.com/forums/showpost.php?p=4312622&postcount=7
I will have to video the recoil of mine some time. Just for learning purposes that is.
I dry fire mine 30 -40 times each range session and still have not mastered the trigger. I will not have anything done to the trigger because this is strictly a hunting handgun. I will master it just the way it is.