You probably already know this (and I don't believe I saw it in previous responses) but you may have to replace the front sight with a taller version. I'm a big fan of installing tang mounted peep sights and that has been my experience in most cases.Just talked with a rep at Lyman about my .54 caliber Hawkens, and a Peep Sight for the muzzleloader. He said they don't make a sight for this rifle.
I've seen pictures (Idaho Lewis I think) of Lyman sights on his Hawkens rifle.
Can anyone direct me in the right direction?
Thanks
Good shooting!