I use a small file to flatten and remove as much of the pin as possible and I do that on both sides as sometimes you need to 'Gently' work back and forth. I also have a pinning block that I drilled a hole completely through and then made a slight depression and that really helped!
However I now use a product that I was turned onto by a friend who lives in the boonies of Idaho. I find it of great use. However it can stain bone, Ivory and certain light colored horn.
While marketed as a 'penetrating oil' my friend referrers to it as a 'creeping oil' that is widely used in gunsmithing. It's great stuff!
Attachment 257084