Bishop,
First, welcome to TFL.
Second, you may wish to search of our revolver forum archives (use "search" above) under GP100. You will find many posts, almost all suggesting the GP100 is an excellent handgun -- I own two -- noted for its accuracy, durability, and reliability. In addition, like all top-quality, mid-size .357 magnum revolvers, it provides unequalled flexibility, accommodating everything from mild .38 Special target rounds to powerful .357 magnum loads for defense and hunting.
Third, thank your relative profusely. Many experts believe the GP100 might be the single choice were any of us compelled to own just one sidearm.