The Shooters Choice MC#7 has been working pretty good for me, it works fast and isn't too expensive. Its an all around bore cleaner & does a pretty decent job of getting rid of copper fouling too...although my 204 T/C Venture normally has little to no fouling when shooting the Nosler BT's...just...

Any BDC will work, some are better than others. I have the Vortex Dead-Hold BDC reticle on my 204. It has small hashes that are used similar to mil-dots..in my rifle with the 39gr Sierra load it has 4 holdover hashes that will get you out past 600 yards, I have my rifle zeroed at 200 yards and the 1...