I will add a few notes of response:

I tend to agree with John that this is only one bullet, and no bullet will act appropriately all the time. The bullet shoots very well in my double and I had difficulty finding one that did (the rifle was regulated with Hornady's discontinued 400gr RN)- I tried A-frames and Woolieghs as well- there currently aren't alot of other options. The Woodies shot pretty good, but not as good as the DGX. I shot this combo ALOT in prepping for the safari and have a great deal of confidence that I can put the bullet where I want out to 75yds off hand and 125yds off the sticks.

I am 100% positive the bullet was recent production DGX, not an Interlock. The DGX is not a bonded bullet.

Regarding 93Mouse's post - My PH Buzz Charlton was very disappointed in the performance and noted that the DGX's reputation on DG among several PH's was sketchy.

From one perspective, it will probably be a long spell before I shoot any thick-skinned DG, and I think the bullet will probably do just fine on thin-skinned DG. I will probably use it on brown bear next Spring, but may load a solid in the left barrel.