Darren, get a patched ball rifle shooting and it is a very accurate rifle. I had a patched ball rifle years ago and rabbits and fox's fell to it, some beyond 100yds.
New barrels need breaking in, often new barrels cut the patch which is no good.
The correct lube for a given rifle is vital too.
Some need a backing was or firewall to stop the patch being burnt.
Look at the shot patch, any holes or tares and accuracy will be sub standard.
If the patch looks like it could be used again then all is good, just got to mess with charge weights.
Another thing is that the n