Re: bore solvent
You could potentially get as many different opinions on this as there are shooters. Remember, in that barrel, you have both copper and carbon deposits. Most cleaners will not remove both. Some are questionable. Wipe Out foam does a good job on both. Montana Extreme, Shooters Choice, Butch's, Bore Tech and others will attack copper. I like JB for carbon, but there are others. I always use nylon brushes, mostly Iosso or Montana Extreme. To check on cleanliness of the cleaner, I frequently swab some Sweets in the bore, let it sit for 15 minutes, and if it comes out clean, the copper is gone. Finish with denatured alcohol to clean out the Sweets.
You can google this subject and get a great many opinions. You will be confused.