I haven't shot a 50gi round yet but I have shot an own a Mark19 that shoots a .50ae round and its a blast! No pun intended lol. I know with a .50ae you cant limp wrist it and have to hold it with your wrist and elbows lock so they at like a shock absorber. At 100 yards out a .50ae still has more energy behind it then a .45 at point blank range.
From the reviews I have read the .50gi kicks a little more then the .45acp but not much. It is a tad bit bigger then the .45acp were as the .50ae towers the .45acp round.
Shot the 21 in 50gi quite a bit friday , all i have is the 300 gr loads, feels very mild but sure knocks the steel down quite hard. We will have the prototype 50gi suppressor on display at shot if anyone wants to take a look