Been on the road a few days. Got to pay those bills, right ;-)
I am happy that posting the link to the Robertson video proved valuable to the group.
Re. cost/benefit analysis: no argument there. I shoot PPU in various calibers by the hundreds all year long on steel for practice & pleasure (and they are darned good at it), and I hunt with Federal Premium Nosler Partitions. My current use of factory DGX ammo is practice and "brass donor" (have not gone to reloading yet, but will one day). BUT, I would not mind using DGX B for hunting SHOULD they prove to be worth it (hence my interest), especially since I can only afford a cow buffalo hunt and I am strongly advised to NOT shoot bullets likely to exit in the midst of the herd. Seems like I am in good company with Boddington ;-)
Re. A Frames: as a guy who has been using exclusively Nosler Partitions for 40 years in Europe and USA/Canada with 6 mm, .243, .270, 7 mm (x64 & Rem), .300 (Win & Wby), .338 Win, .340 Wby, .375 H&H - Lord, what do I forget? - since the days when A Frames where not even a thought in the future, I am a fervent believer in the partitioned dual core concept, and yes, I do have a few boxes of Swift for my .416 Rigby intended for field use, from which I do expect the same stellar performance I have had from Partitions for 40 years, whether they shed their front core or not, which happens with monotonous regularity in my experience based on the few bullets I recover that did not punch through. This apparently did not prevent the job from getting done, and therefore did not bother me overly.
From what I saw from friends shooting the A Frames in the last 20 years or so, I did not change from Partitions to A Frames because A Frames also seem to shed their front core, or at least most of it, based on recovered bullets, hence I do not see a real life reason for replacing the couple hundreds Federal Premium Nosler Partition cartridges I keep in various calibers. I may be wrong there, but to me Partitions in European / American calibers are good enough.
Except that in Arizona sooner or later they will be illegal due to the no-lead requirement in Condors areas, that I expect to sooner or later be extended to most the northern part of the State where I live and hunt. Can you spell TSX market opportunity LOL...
Looking forward to read on DGX B in about one year, when enough have been shot at game for DATA to speak...
Thx
Pascal