flounder33
The only time
I do not use a bore guide is while hunting and then I might only load one or two shots in a season. Other than that I always use a bore guide no matter what type of rod you might be using. Crowns can be and have ruined by ram rods rubbing them. Most high quality center fire guns the manufacturers do not even want you to clean form the muzzle and fancy boreguides for the breech are made available.
Get a bore guide it is well worth it.