Re: Barrel prep?
I'd treat it was like new and break it in. Since it's likely been shot a little you can probably skip a real detailed break in. I'd fire one 1 shot group and clean, one 2 shot group and clean, 3 shot etc. Be sure to clean with a bronze brush which has a brass center to avoid scratching the barrel. I always break in and clean barrels with the benchrest shooter's favorite, Shooter's Choice.