Bore guide. Do not let rod rub barrell crown or chamber. 30 cal jag with 1 patch with Rem bore cleaner. Pour boilng hot water thru bore to remove any machine oil polish until your arm falls off. Next nigbt repeat. When finnished boil water and pour through barrel. This will remove remaining polish. Hold barrel with a rag it will get hot. Break in 1 shot and clean 20 times cheap ammo. Then 3 shots and clean.
I have done this to several factory rifles and tbey all shoot above average for the class.
I used this process on a Kimber VT Long Master. It shoots one hole at 100. My best shot was a PD at 725.
