I went to the range with 48 rounds of Pritchett tube cartridges (my cheapo made in India box doesn't quite fit the 50) and had a blast , mostly making smoke and noise My 100 yard silhouette target was covered in a scattered bunch of bullet holes and if I really did my part I could hit the 100 yard steel swinger. I fired 5 rounds off sandbags and put together a fist sized group. I've been shooting rifles my whole life , I can take an "unmentionable " with iron sights and hit a clay at 300 yards , but these Musketoons are a special challenge. I have 2 Parker-Hale Musketoons and they shoot very well with regular Minies but most of my shooting with them has been with these Pritchetts. Maybe the twist rates or barrel length doesn't agree with them, but I did get a "group" off bags so I'll keep trying. I think the short barrel and coarse sights are a challenge.