RE: Anyone use muzzle protectors?
Bore Guides are something I use all the time. Look down an old rifle that was cleaned over the years and no bore guide was used. The long scratches will shock you. Especially if you use a steel ramrod. Also remember, the loading jags are steel. All of this metal to metal rubbing on each other will do damage over time. I have brass guides on one rod, and plastic ones on others. I also have them for different calibers. Why risk a good rifle when they are so easy to use and so inexpensive.
The only time I do not use them is in the field hunting. I figure I can reload once or maybe twice with out one. But Bore Guides are a good thing. Don't let your barrel insides look like some of my old rifles I have around here.