If it has been mentioned already, my apologies. The RCBS 200 gr cast is good in the 35 Rem, and it works in the 350 RM as well. I have both rifles, and they survived the last purge. A 336 from the early 50's and a Rem 700 Classic. I do not have a 35 Whelen, it will work in it as well but IMO the Whelen works best with a 250 gr bullet. With the RCBS cast 200, you can run the 35 Rem at full power. Fryxell article lists data.
"The folks at RCBS clearly had the .35 Remington in mind when they designed their 35-200-FP. When crimped in the crimp groove, the base of the GC come down even with the base of the neck. The OAL is 2.410" (maximum allowable OAL for the .35 Remington is 2.525"), and as a result, it cycles perfectly in the levergun. When loaded over 38.0 grains of H335, this fine bullet left the Marlin at an impressive 2184 fps and gave excellent accuracy (5 shots into an inch at 50 yards with buckhorn sights). This is an excellent all-round load for the .35 Remington. This load could easily turn into a personal favorite for the .35 Remington levergun."
If you are going jacketed, the one bullet that works in both the 35 Rem and 350 RM is the 200 gr FTX. The 2.79999" magazine in my 700 Classic precludes the use of any long bullets.
The Speer 180 shoots well in the 35 Rem, and the 220 should make the 350 RM a bush wacker, hog stopper or Moose rifle.
For hunting bigger game, I've often thought that a Woodleigh would be a good choice.