Part of the problem is until you get all the oil out. It looks like rust.

I used up a whole can of brake cleaner, and finally had to wrap some 0000 steelwool around a brush with brake cleaner to get it all out.

Glad I didn't give up though. It's the best shooting ML i've ever owned.

I shot it again this morning. I boosted the load from 100gr to 110gr with 300gr Thors. It took my 1 1/4' groups @100yds to sub MOA.

My hunting gun is ready for next Sept. I'm not changing nothing.