Thanks for the report. I have read positive reports regarding the Bonded DGX bullets. Pictures of recovered bullets have shown that they hang together with a substantial frontal area.
I have a box of the 500 grain Bonded DGX that came with a 458 Winchester. This box advertises 2140 fps. I don't know if Phil's were factory or hand-loads. But, they obviously preformed well on the big-black-beast with attitude.
