Junior,
I've read your site information on your Yugo SKS and really appreciate it. I have a Chinese SKS and have been too busy to even fire it once!
Whether you agree or not, my gut tells me that a large meplat, heavy boolit traveling slower than a higher speed pointed projectile will more likely do what I want done. Maybe that is what your site information is really saying.
When I DO finally get a chance, I am inclined to try both 4227 and some shotgun powder (red dot - unique - 700x).
I'm happy with 1800 FPS and even 1000 FPS if the projectile is heavy and flat nosed enough.
Bob