I just inherited this gun from my late uncle, who got it from his dad. It is a Smith and Wesson .44 Special. The serial # on the frame under the cylinder does not match the one on the bottom of the grip. It locks up tight and functions well. About 3 years ago the cardboard box it was stored in got wet due to a house fire and my uncle's homeowners insurance paid to have a gunsmith reblue it, so I am assuming it no longer has any collector value. It has not been fired since. Is this gun a "Hand Ejector 2nd model?" And does that make it an "N" frame? I want to buy some better grips for it and shoot it, but I dont know where to look. Are these guns well made and robust enough to use +p ammo? Any info would be appreciated, thanks.