$40 for a 50 count box of 358 Oryx is a great price.
Oryx bullets are bonded core types, utilizing thick jackets with constant thickness from top to bottom. They are very tough.
I used the 230 grain bullets in my rifles, but had to stop, because they were almost impossible to find, while I was still using my 35 Whelen.
I sold the two 35 Whelen rifles I had built for myself, because finding good bullets in 35 caliber was always difficult, unless I ordered them out of the US.
My go to 35 Whelen bullet was the 250 grain Speer Spitzer, over IMR4320, and N140, for just over 2500fps.