Yesterday I bought some Hoppe's Blast n' Clean. It's one version of the newer type of gun cleaning products that comes in an aerosol can and uses pressure to power solvent into nooks and crannies. I had never tried an aerosol cleaner, so I thought I'd experiment with it.
First impressions: This stuff seems to be very similar to another solvent I keep in my shop for automotive tasks, Carb cleaner. It works about the same way. A high speed jet of solvent is directed at fouling and softens it and washes it out of the way. This stuff seems to work very good, although I'm not convinced that carbeurator cleaner wouldn't work just as well. Guns and carbs are both steel machinery with lots of little crevices to attract crud. The cost of each type is about the same.
It did a good job on carbon fouling around the face of the breech. One shot of solvent and one wipe with a patch and old fouling came off in chunks.
I used it on the Model 12, which is difficult to detail strip. The Model 12 is certainly more difficult to detail strip than the newer Remington 870 or Win 1300. Both of those I can strip in a few minutes. The Mod 12 seems a bit more intricate. Still, I've known Model 12's in service for 50 years that have never been detail stripped.
If you're going to use spray cleaner, go to a tools store and pick up some inexpensive safety glasses. I've seen the same glasses in the outdoor section of Wal-Mart, and four aisles down in the tool section, with a $5.00 differential in price. Get the ones in the tool department. You will get some splash-back from the spray and having a jet of methyl-ethyl ketone sprayed into your eyes isn't a good thing.
Don't spray this stuff in your wife's kitchen. It'll probably play hell with linoleum floors and it'll make a heck of a mess. It dripped all over my bench and cleaned up some old grease stains.
It sure got the crud out of the innards of the shotgun. A quick oiling with Break-Free and I was done.