I found an accurate load with my whelen using 4895, dacron filler, and the Lee 200g boolit. Quick load predicts 1664 fps at 12760 psi. I was really worried that was a little too slow and was planning on upping it to around 2000fps.
This morning I had a nice mature buck step out at a little over 100yd. He was quartering toward me and about to step in thick brush so I took the shot I had. I placed the crosshairs on his front shoulder and jerked the trigger. I was surprised, really surprised to find an exit wound in his back ham. Penetration from front to rear. I am not too concerned with the velocity any more.
Milkman