RE: scope base that allows use of iron sights.
Big, if you do have a deer close, you can still kill him with a scope...I killed one a few years back with my .243, I had the scope set at 3 power,
the buck sneaked in behind me and I could see his antlers when I looked down between my legs...He walked about 3 steps away from the tree I
was in and I put a CoreLokt in his neck...