My Savage B mag

I've discovered my new stainless steel heavy barrel B mag fouls very quickly. To maintain accurate groups I need to clean it every 20 to 25 shots. Cleaning needs to be aggressive, using Iosso or JB bore paste. Just using Boretech C4 carbon and copper remover with brass and nylon brushes respectively does not get it clean enough to shoot tight groups. When the fouling is removed the gun will shoot 5 shot half inch groups at one hundred yards. Sometimes I'll get one flyer out of the five but even then the entire group is sub MOA including the flyer. When the bore is fouled I get 2 inch plus groups.

Has anyone figured out a way to elegantly feed single shots in the B mag? I find it a little bit difficult given the protrusion at the breach which is there for the extractor to get behind the rim.