Why did my Muzzle Loader accuracy get worse? Savage Moderator April 11, 2013 20:31 Follow Many factors can affect the overall accuracy: non-recommended load or loading technique non-recommended primer constricted breech plug worn vent liner bulged barrel Related articles What are the recommended loads for black powder and Pyrodex for a muzzle loader? Where do I send my firearm for service repairs? What is the purpose of the vent liner on an 10ML or 10MLII? Where can I buy parts for my Savage firearm? What is the torque spec for my action screws?