Thank God, someone who shoots a REAL rifle! Been wading through some of the posts on in-lines, and wondering...why? Blow back, stuck breech plugs, plastic stocks, "miss-aligned" bolts...!!! Just kidding, to each his own.
I love the .58, I have a .58 slug gun.
Right now my new toy is a Brown Bess, took it out Turkey hunting this spring but did not get a shot. Tried for Elk during early Elk BP season, but didn't get a shot.
This fall I got three grouse with it, and on the 20th I'll be chasing Elk around with it again. I've got rifle sights on it, and with FFg Swiss, a .735" ball, and thick ticking I'm keeping my shots in a 6" circle at 75 yards, and on a paper plate at 85. 3-4" at 50 yards is no problem.
Well congrats, and I'm assuming your rifle is a flinter? My next rifle will be a .62 Calibre Jaeger kit from Track of the Woof.