Just another comment on bullets for the .35 Whelen. I've taken about 20 elk and some moose with mine, and a few smaller critters. It's been very reliable if correct bullets are matched to the intended game. I have only had two unsatisfactory bullet performances.
Most shots were elk with a variety of 250 grain bullets at 2500 fps muzzle velocity. Those shots were all from 15-150 yards, always resulted in adequate expansion, deep penetration, even when heavy humerus bones or humerus/scapula joints were hit on the way to the vitals. I really like the discontinued Speer Grand Slam 250 grain on big bull elk. But the Hornady Interlock SP and RN and Speer Hot Cor SP expand a bit more while still holding together and penetrating deeply. They are less likely to exit than the Grand Slam though. I like two holes when hunting big animals in thick bush. Elk hit properly through both lungs generally ran about 20-30 yards and dropped.
As much as I like the old Speer Grand Slam for elk, it's too tough for deer. I once shot a whitetail buck with a 250 GS at about 180 yards. Hit too far back, bullet just clipped one lung, through the diaphragm, and liver. Wound was small and narrow with such little resistance. I had to track that deer for more than an hour and for a KM or so before finishing the job. A lighter constructed bullet, or even a Hornady 250 RN would have expanded quickly enough to shred the liver and finish that deer quickly.
The Federal TTBC 225 grain is very good too, but not available as a hand loading component. Took two bulls with it, very satisfied. I've not used the Nosler partition in this cartridge, although it's always a good choice. I've only shot one elk with a Barnes all-copper bullet, it worked as expected.
I wounded and lost an elk once that I shot with a 225 grain Nosler Ballistic Tip - I expected similar penetration as the 250 grain Grand Slam bullets that I had been using, and the shot I chose to take, angling from the rear / left side failed to penetrate the rumen to the vitals. A very bad decision on my part, but I won't use those bullets again. The currently made 225 grain Nosler Accubond would have been a better choice for penetration - and not shooting through the rumen!
The other failure was a Sierra 225 gr. Boat tail. I shot a nice little whitetail buck through the centre of both lungs at a range of just 10 steps. Impact velocity would have been over 2600 fps, but that bullet failed to expand at all from what I could see from the tiny narrow wound channel. That deer ran over 200 yards before expiring and was a challenge to recover with no blood trail at all. I won't use Sierra 225's any more in my Whelen.
I also shot a lot of Remington 200 gr. CorLokt bullets, but after expansion testing I reserved them for deer, never did shoot anything bigger with them. They are not impressive penetrators and tend to shed their jackets. Same with Hornady 200 gr. SP.