So. I am not new to muzzleloading, but not very educated. That being said, I was recently given a rem 700 50 cal ml, not the ultimate. The gun was very dirty, and after a lot of work got it cleaned up, but noticed some pitting in the barrel just past the breach plug on the left side. I’m am wondering if it is still safe to shoot, and if not, can I get a replacement barrel that won’t break the bank? Do they make a 45 cal barrel? Looking for any input.