My system vs my brother's system
My system:
Only buy factory lapped barrels [Shilen select match, Kriger, Pac Nor Stainless Super Match, etc]
Get P3 Ultimate Gun Vise, take off height adjuster, build wooden understructure and clamp to bench.
Patch with KG1 [Carbon cutting]
Dry patch
Patch with KG 12 [Copper dissolving]
Wait a few
Dry patch
Brush with Witches brew [like Kroil and Flitz mixed with a ball bearing in the bottom] [kreeps under Copper]
10 strokes
wait a few
10 more strokes
Measure brush diameter, if smaller than groove diameter, replace and hand it down a bore size
Patch with alcohol [Flushes out black stuff from Witches brew effect]
dry patch
Inspect last 1/4" of bore with magnification and illumination
If any Copper is present, go back to KG12 step and continue
Copper fouling should only be 10 or 20 minutes downtime before back to shooting. Shoot for days until sighted in at 600 yards.
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My brother's system:
Buy used Rem 700 rifles when someone dies. Cheat the widow out of a few sheckles.
Shoot the rifle until it fouls ~~ after 10 shots it will not shoot a 1" group.
Go home and soak the bore in Hoppe's No 9 overnight, while eating drinking and watching TV.
Don't go back to target practice, you are ready to shoot a deer, elk, or antelope at 100 yards.