OK, I applied UBC to 3 rifles a couple of weeks ago. One of which was my M70 300WSM. I cleaned them thoroughly first - several patches with Hoppe's, then a brush with Hoppe's, then Barne's CR10 patches, then a patch around a brush with JB's, then more Hoppe's and CR10 until the patches looked the same coming out as going in!

Then a used the "solvent" that came with it as directed. Then applied the UBC with a bore mop soaked as directed in the instructions.

Well, today was the first time I could get to the range. Ran 15rds through it. Decided I would go ahead and clean it then to see what's up. It was honestly the worst fouling that I've ever seen out of this rifle - powder and copper!?!?!?! The UBC website says that the first cleaning will likely be the worst, and that it will get better over the next few times - I sure hope so!

Anyone else see alot of fouling initially applying UBC? Did it get better after the initial cleaning?

Thanks!