Extreme,
Wipe-Out was made for you.
You spray it down the barrel, it foams up to fill the barrel and you let is sit for an hour or so. It cleans out the powder and copper.
Then run a patch or two through to get the Wipe-Out out.
Then repeat the process until your patch comes out clean.
No scrubbing required. Usually takes 2 or 3 times.
Total cleaning time is usually (not counting the time the gun sits with the Wipe-Out in the barrel) about 10 minutes.