Nordic: I'm not sure what bullets CorBon uses. It could be some of their own design. As for the optimum velocity "window" for the 10mm/165gn GDs, 1300-1350fps sounds about right.
Stealther: If you do a Search over on GT's 10Ring, I believe there were posts from last spring from people (MCNETT, among others) who had chrono-ed various factory and handloaded 10mm ammo, including the Winchester STHPs. Seems the consensus was that there were a few batches of 10mm STHPs where it appeared they had lost some of their legendary "heat," but that more recent lots were running in the high 1200fps range, again.
I've heard nothing but positive comments about Remington's Golden Sabre bullets, many from .45 guys, IIRC. They'd probably be excellent at 10mm velocities.
As far as "overpenetration" with the XTPs, I agree it's a tough bullet, ideal for handgun hunting in the "big bore" calibers. But the issue of "overpenetrating" the "target" is all mixed up with the issues of velocity, expansion, and the probable composition of your target. One issue is how fast do you have to drive a bullet to get max expansion without it slowing down and stopping short of a vital organ or, worse, going so fast it literally detonates on impact.
Obviously, against the tough hide and sinewy muscles of, say, a wild hog, you want a deeply penetrating round. But this might also be the case during an armed encounter against individuals wearing bulky winter garmets with thick inner linings or an outer shell of reinforced leather with heavy clothing underneath. Here, you
want sufficient penetration, since
underpenetration can get you killed.
OTOH, if you live in a state where it's virtually summer year round and the people dress like you see at major golf events, then for that environment a more applicable choice in 10mm would be a load with bullets having rapid-expansion characteristics - and not necessarily the heaviest bullets either(200gns) but maybe the ones in the 165, 170, & 175gn range.
Interestingly, Bill Wilson takes this same approach. He advocates the use of Hornady's 200gn and 230gn XTPs in .45acp. He recommends their .45 loads as very accurate, stating that they use "the most inherently reliable feeding and
expanding bullets available." (Source: Wilson Tactical Gear 2002, p.35). Specifically, Wilson says the .45/230gn XTP bullet is preferred "
in the winter to increase penetration through heavy clothing."
The same reasoning applies to the 10mm XTPs, offered in 180gns @ 1180fps and 200gns @ 1050fps. If you feel the 10mm/180gn XTP is driven too fast for use against heavily-clothed humans, take a look at Hornady's 200gn load, which moves at the same velocity as the 200gn CCI/Blazers.
HTH.