Originally Posted by wingnut1983
I also heard from someone that you should use the brush but only once or twice through from the breech end only, is there any truth to that?
Depends largely upon what you've been shooting. The brush assists in removing foreign metal fouling. Gilded metal (copper/bronze) adheres just as lead does. A rough bore collects more than a smooth bore so a new barrel may tend to collect more than one that has been lapped or shot into prime condition. Proper maintenance avoids developing pits which in time will also collect deposits and not go away.
Used properly, a bore brush will not harm the barrel. Some guns, such as revolvers do not provide access thru the breech so you must enter from the muzzle. If the chambering is for a round also commonly found in rifles (22 rimfire) its a good idea to get a bore brush for "pistol" since it is shorter and will often pass all the way past the forcing cone into the cylinder gap and permit the bristles to straighten and reverse.
A rule of thumb from so many years back I cannot say where it originated was---run a bore brush in and out one time for every 10 rounds fired when using lead and once for every 20 rounds fired using jacketed.
If you have neglected to use a bore brush for a long time and are concerned with fouling of the bore:
Get a cork that fits snugly in the chamber end of the barrel and stand it muzzle up. Fill the bore with Hoppes, Shooter's Choice, etc. type of bore solvent and let stand full for a couple of days. Dump it and swab with both soaked patches and bore brush it alternating every now and then and then rub it dry with firmly fitting dry patches until they come out completely clean.
Unlike powder residue, metal fouling of the bore may not be visible at all from an oiled patch cleaning.
Don't be overly concerned if you haven't been doing it, just start doing it and you will establish a well maintained bore over time. Even a well maintained bore will eventually deteriorate and with today's autos its easy to replace.
Hope this helps,