So many variables with felt recoil, but when I plug the numbers into a recoil calculator comparing 300 with 180s at 3000 and a 35 Whelen with 250s at 2550, the Whelen shows a bit more recoil with like rifles, which more or less matches my experience. My favorite 35 Whelen has a narrow butt, and is no slouch in the felt recoil department.
“So many variables” is right. My rifle for DG, like Buff, is my 10.2lb AHR .404 with a 23” Douglas tube.
But for PG, and generally anything else on the menu that’s not DG, my ‘light’ rifle for Africa is an old school Remmy model 660, chambered in .
350 Rem Mag. Ballistically, it’s the twin of the .35 Whelen. In fact, my 250grn handload is right there @ 2500fps with a spitzer SP.
But unlike any .35 Whelen I’ve seen, the 660 does that with a 20” barrel. Unloaded weight - with sling, stock pack, scope, rings, and mount - is all of 8.2lbs. Go irons only and the scale drops to about 7.5lbs.
A couple of cheats: we did replace the flimsy factory plastic trigger guard with a metal unit (so yeah, that added a tad of weight), and we noticeably reduced felt-recoil by ditching the factory butt pad for a KickEzz pad (perfectly fitted for the same LOP as factory).
For a safari with a menu of multiple non-DG game, say, 6 to 8 species including large ungulates, I’m not worried about felt-recoil over the course of harvesting those. In the field the 660 carries extremely well - better, in fact, than my Lon Paul custom 22” BRNO 602 in .375 H&H, 9.9lbs scoped; yet it will down any non-DG critter as hard as the BRNO. Sure, the .375 is also DG-legal in most of Africa, but the .404’s got that covered for a one Buff hunt.