RE: The Corn Starch Trick
I haven't heard of the corn starch trick yet. Course I've just started getting in to muzzleloading and am still somewhat of a greenhorn.
I do know what you mean when at the range though. I don't know how many times I've been at the range checking accuracy of my 30-06 and felt like a foriener, where no one even says "howdy", but I showed up with my 50 cal. Hawken and the bees came out of the woodwork. Last time I was there the range boss (who also happened to be a prominent member in the National Muzzleloaders Association) wouldn't leave me alone. His big trick was to swab out the barrel with simply green cleaner after each shot. He also did some heavy recruiting to try to get me to join the NMA and a local group called EE-DAW-HOW Longrifles or something like that.
Another thing I did get from him was to file down the rear site to a flat withthe center notch (if you have a curled up rear sight, like bulls horns...not sure what they call it). He claims it helps ya increase accuracy, and he was quick to pull out a target from his last shoot. It was an impressive group he shot with his 45 cal.Kentucky style flinter at 100 yards. I haven't done that to mine, as I am happy with the results I'm getting, but my brother (who was with me that day) did it to his, and he said he notices a difference.