I don't understand the problem with cleaning BP. Just get a bucket of water- take it outside if you must, put a little liquid detergent on a wet patch, put the barrel in the bucket and pump the ramrod with patch up and down until the water in the bucket suds. Change the patch a couple of times and do this until all the crud is out of the bottom of the barrel. Throw out the water, and the smell is gone. Rinse in fresh water, and then wipe down the inside with a couple of clean patchs. When they come out clean, use a final patch with a lube or oil to protect the bore from rust. Then wipe down the outside with a good solvent to get rid of the handprints, and salts from your skins. Clean the lock area, and re-install the nipple after oiling its threads. Put the barrel back in the gun, and you are done! It takes only about 5 minutes.
With substitutes, you have to use smelly solvents, to dissolve the residue it leaves, then soap and water to get any primer residue out, too. You still have to remove the nipple, and the barrel from the stock to clean, and it takes as long, or longer to clean it. With the substitutes you have to clean the barrel soon, or you will get corrosion, where BP will give you a few hours leeway. The substitutes require hotter caps to ignite, are even more dirty between shots, do not shoot consistently, for most shooters, and have their own " smell ". If you check the GOEX distributer for Texas, you should be able to locate a source in either Austin, or San Antonio, or very near by. Find him with the links page here, and call him at his 800 number. If there is a state shoot, you should know about it, so you can go there, if not to shoot, then to make a buying run for the year. Get a shooting buddy involved, and visit the range. You may just find a lot of stuff you didn't know about, meet some very fine men, see some decent shooting, and maybe get the itch to enter the shoot next time. Don't plan to shoot against the other shooter; always shoot against yourself. If you keep track of your best scores, or groups, and try to better them, or at least get close to them, that is all that matters. Everyone has bad days, and a few great days, and mostly good days, as any day shooting is better than a day spent behind the desk!