Like Mark said, Traditions and CVA will keep you in that price range, but if you can go the extra, the Lyman Great Plains Rifle is an excellent rifle. I have a Traditions Woodsman Hawkins, but it is a cap lock. This is a .50 caliber, and has a 1-66 twist, but a great shooting rifle. No complaints about it. And I think brand new it was under $140.00. My other sidelock is a T/C which would not be in the price range your talking, but again, another excellent rifle. Look at some of the different ones out there. Be careful with used rifles. Some of them I have seen are all right outside, but down the barrel, they were not cared for as well as they should have been. With flintlocks, you might have to invest in a new lock. Some of the low end rifles are all right, but their locks lack a little. Good luck in finding one.