The Nosler Partitions were based on the older RWS H-Mantel design with a solid cross section shank in the partition. I believe the H Mantel has the middle of the cross section of the H with a gap? And a hollower tip with the cap on top.

I haven't used them. Would if they were still available and price competitive.

I would have any problem in a 9.3 mm using them on all deer, including red, sambar, elk and moose, big boars, even bears. Probably not buffalo, but they probably would work reasonably well.

I imagine the front half will either mushroom or blow off and the rear shank penetration.

I would like to see the results when you use them, and hopefully see mushroomed bullets.