Cup and core are all velocity dependent. The 270 Hornady has a good reputation at 375 H&H speeds and would likely be very good in the Whelen as well for all the logical reasons. The 250 Hornady 358 is great in a 35 Whelen on larger game. The rn open a bit sooner than do the spire points but still penetrate well.
As with all bullets there is those pesky anomalies.
