Ifn you are going to be shooting the 45-60 in distances of 200 yards and beyond... that factory installed buckhorn will get you alot of misses. Looking back I went thru a bunch of different Tang Sights, I had bad luck with Marbles, they wobble to much, at least mine did, I tried the Taylor & Company DO2 Vernier Tang Sight, it looks good, but looks do not count when it come to hitting the target. I went thru three different Italian made Vernier Tang Sights and they were useless. I finally forked out the money and went with the Kelly Soule Sight for Silhouette Mid Range, best decision I have ever made in regards to sights. The Kelley Sight is extremely accurate in both elevation and windage adjustments. I do not shoot the holy black, don't like the mess it makes and I can't stand the smell of it. I have very good results at 200 yards and beyond with 5744 and Trail Boss. The best bullet for the 45-60 I have found is the 300 grainer RNFP sitting on top of 25 grains of 5744, very accurate at 200 yards and 300 yards in my rifle. When shooting a 405 grainer RNFP or a RNHB on top of 12.5 grains of Trail Boss it is also very accurate. The buckhorn sight is probably best for 50 to 75 yards ...my opinion. The rifle will only be as good as the sighting mechanism you use and the right loads, and sometimes the trigger puller.