Thought about changing my barrel out on my 10/22. It shoots ok now, with about 2.5" groups at 50 yards. Stingers shoot the best out of it. Tried all the match ammo, like eley, subsonics, green tag, federal gold, and it doesn' t seem to like this type of ammo. Talked with a guy at the range, and he said I really don' t have the chamber for it. He has two 10/22, one with the Fajen stock and carbon fiber barrel and another with that butler creek kit that cabelas sell with the heavy barrel and stock. Both shoot very well but he has to clean out the chamber every 15 rounds or he said he won' t be able to get the brass out. He said he changed out the extractor to a titanium one, but still doesn' t help. Do you guys have to do this?