I'm not quite familiar with the term "barrel fouling", so not sure on that comment??? I recently pulled about 50 rounds that I reloaded due to not liking the way the load was working in the rifle, as the pressure seemed a bit too high. I used an RCBS collet puller and saved the bullets for shooting at the range as practice ammunition. The bullets were .30 caliber, monolithic bullets and not a cheap date, wasn't going to throw them away just because they were pulled. There were some minor scratches at the base of the bullets from where they were seated in the necks, but nothing else.