RE: Cleaning a gun barrel, from muzzle to chamber
Aluminium rods, due to the "softness", will over time get harder pieces of grit embedded in their surface. This acts like a low quality sand paper and will over time erode the quality of the rifling. this WILL effect accuracy over a period of time. Most people will not notice this accuracy loss except in extreme cases of serious abuse.
Three piece aluminium rods tend to be worse due to the greater flexibility that they have. These rods tend to scrape even harder on the walls of the barrel.
The preferred method is to clean from the chamber to the action using a one piece SS rod. Using a bore guide that is properly fitted keeps any solvents from dripping back into the action. If you need to clean from the muzzle, use a one piece SS rod with a muzzle guide (also called crown protector).
Many people will buy a $600.00 rifle and then buy the cheapest quality cleaning kit to run through it... Hmmmmm... do the math.
If you can shoot 1/2" 5-shot groups @ 40yards it would not appear as if you gun had been adversely effected. My .22 does not seem to be effected from my numerous cleanings... I can still cover all five rounds with a dime at 60 yards... I'm REALLY careful with this gun. LOL!!
DREAM BIG, LIVE LARGE, DIE HAPPY ~Country Boy
Life is not a journey to the grave with the intention of arriving safely in one pretty and well preserved package, but to skid across the line broadside, thoroughly used up, worn out, leaking oil, yelling GERONIMO!!!!!