I have been down this road before - Brief Historical note: the most popular Elk caliber prior to WWs was the 30-30 according to G&A. Now: W the new 30-30 rds w plastic tip a gent dropped an Elk w one shot @ 80 yds. G&A (have also heard of new rds not expanding in a hog w 35 cal) We all know bullet placement trumps all.
My Grandfather left me his Rem pump in 35 Cal - it was his Canadian hunting rifle. He went after moose w it but never filled the tag. He had an almost religious belief that anything he shot w it, would go down. (probably because for him, it did)
In the 1980s, the 30-30 was a fine deer rifle but unsuited for anything larger. The 35 Rem was considered more effective but still not suited for big game. Grampa sure as hell didn't see it that way but the Magnum craze was in full swing n the gun writers were along for the ride.
Who is right ? Have these old calibers been relegated to the dust bin of history or can a chunk of lead at moderate velocity still be effective in the modern age?