I own a BC 45/70 load it smokeless and with BP. I have a Williams peep sight and a Williams 17A front sight with inserts. one of the most accurate guns I own. Not the fanciest but with 50.0 gr of IMR 3031 /405 RemJSp/Fed 215 mag riflew primer it is a tack driver . As near a 1 holer @100 yds as I have ever seen with such sights, I shoot long range (1000yds) comp with that rig and can ring a 12X12' steel plate 4 out of 5 times from a rest.