My advice would be to handle as many rifles that you can. A good fit will help accuracy. Reasonably, someone new to muzzloading and flintlocks in particular should consider 50 yards a good max. A longer barrel is helpful due to a longer sight radius. Many flinters can shoot to 100 yards but it takes a proven load and lots of practice. Limit your effective range to a distance where you can hit a 4 in circle consistently off hand. Also, while a flintlock is generally considered a round ball gun, RB's tend to lose energy quicker at distance. I shoot Maxi Balls because of their incredible knock down power and are very accurate in my 1:48 twist rifles. They carry more energy to my self-imposed 70-80 yard max shooting distance. These are my opinions based on 50 years experience. Some will disagree.