For my 12ga USHD I opted for a fixed 4 power Nikon. I prefer the fixed four power because I can get a clear view up close and still have enough magnification for even the furthest shot my set up is sighted in for.In my case that's 0-150yds.I don'tneed to worry about what magnification I'm at or turning it one way or the other. It's worked great for me but getting an adjustable magnification scope wouldn't be the end of the world either. I've used them before but I always find myself keeping it a a certain power setting......like 4.