My eyes aren't what they were and I'm wearing glasses now. I can use iron sights out to about 50-60 yds but after that it's dim, apertures are much better but I had my .375 made with a QD mount to make it an all round rifle, over .450 I always think of a stopper, i.e. 30 yds or less, so irons only, just my 20 centimos worth, best, Mike