Couple of stray thoughts on the idea.

Before I am skewered on a spit let me say I am quite fond of the .35 bore, and especially the .358 Win. If I may paraphrase some asshole politician from the past however, "it ain't no .338". The .338 has better SD/BC, and about everything else a guy could want, including a better array of bullets and essentially the same weight range. The .35 has it's place, but the .358 Norma and similar designs are at a disadvantage when compared to the .338 and it's cousins. JMO, but the .35 Whelan is the end of the road for that caliber, at least until somebody wants to tackle the bullet issue. At present the .338 will do anything the .35's will do, and a fair bit more.

Except of course for mild to moderate noise/recoil for about 250 yards or less, and only a little dead instead of real dead.