Re: Almost too embarrassed to ask!!
I'm currently using walnut,for the same reason. It is a little harder on brass than corn cob, but alot of my brass was really tarnished and wouldn't come clean with the corn cob but did in the walnut. I have found that if you don't leave brass to long it may be better. I haven't had any problem with it getting stuck in the flash hole.
Don't tell God how big your storm is, Tell the storm how big your God is