The problem with the bore snake is that if it breaks with the brush bristles in the bore, trying to push that out with the bristles biased in the wrong direction and creating a wedge, is very difficult, and it will mark the bore on a .22 or another gun with relatively soft barrel steel. We've had past posts about stuck Bore Snakes and I found them discouraging enough that I don't use the two I have. Besides, with the modern bore cleaners, you don't need the mechanical brush scraping anyway.
Nathan,
I have everything you listed. Much of it just occupies shelf space now. I haven't used a bore brush in probably five years now. The coatings have mostly stripped off the Dewey rods over three decades, and as you'll find reference to elsewhere, a smooth steel rod surface can't do detectable damage to a bore, so an old Rig stainless rod I got in the 80's does everything but tiny bores, now. The Dewey jags are brass, so they dissolve in the Bore Tech and KG-12 copper removing products, so I don't use those jags any longer. Bore Tech Proof Positive jags have replaced them. I've got most of a quart of Butch's Bore Shine I haven't used in a dozen years. Way to slow compared to the Bore Tech and KG products, plus you have to smell ammonia and, of even worse consequence, the wife's nose smells the ammonia. There's also most of a quart of Montana Extreme doing the same sitting duty and much of a quart of Barne's CR-10, and a partial bottle of Sweet's 7.62. All the ammonia-based products are out now.
I haven't found JB Bore Compound or the bore polishing compound necessary for cleaning for a long time, though I still use them and Iosso Bore Cleaner (another mild polishing abrasive) for other things. They do help speed up barrel break-in, for which I wrap a couple of patches around an undersized bore brush as the polishing mop.
KG-1 is about like Bore Tech C4, as near as I can tell. Both fair carbon removers, but neither holds a candle to the aggressiveness of Slip2000 Carbon Killer. I soaked the tip of a Garand op-rod in Slip2000 for three hours one time to get all the decades-old hard carbon cake loosened up, and it did it. It also thinned the Parkersizing a bit, but it freed up the carbon, exposed the rust pitting underneath and let me get that off, too.
KG12 is every bit as fast as Cu+2 and may have even more copper capacity, but has the drawback that it doesn't give a color indication to let you be sure when it's finished, so, at this point I would only recommend it for people who own a borescope they can check cleaning progress with, or those willing to apply it first, then apply Bore Tech's Eliminator or Cu+2 to confirm the copper is gone. But again, you can't use a brass jag for this or the copper in the brass will turn the patch blue.