Bronze brush will work on some things, but a pocket knife or scraper tool works faster.
On my bolt guns I use a bronze brush for all cleaning. But never run CLP down the bore, unless I am storing the gun for a looooong time.
Just spray some CLP on an AR bolt and let it sit. Try to remove...
My experience with many years of CLP was when at school they showed us Hoppes, Shooters Choice, and the like, CLP was just a good lube for sea salt rust prevention. It will remove fouling as stated, but no copper or hard baked on carbon. Ever scrape a bolt carrrier group from an AR?
Edit to...
I read on here you could form 338 RCM brass out of 6.5 PRC, but I do not know anything about it. I had considered that as well. 338 SS is sort of calling too.
I shoot a 338 Sherman with 175 Hammer Hunters at about 3207 FPS and the 213 Hammer Hunters at 2763 FPS. A 338 WM with a little more...
Not 180, but 175gr Hammer Hunter from a 338 Sherman. 3207 FPS with Varget.
If elk is on the menu, I would use the 213gr. Itas moving at 2763 FPS from same rifle.
Heavy packs and body armor has trashed my body. I'm all about the pack mules/horses, gators, llamas, whatever I can to keep the weight of my hips...skateboard 🤣
Shoot it slow. Pay attention to the mirage coming off that carbon barrel. Mine plays havoc with me. Anymore that about two shots within a few minutes and it makes the target so blurry I can't put the cross hairs on the dot.