... The frontal area of a 7mm is about 25% larger than a .25. The 30 cals are half again bigger and the .375s a bit over double.
Size isn't everything but it is something. If big guns weren't better for something there wouldn't be any big guns.;)
Harry Selby for decades guided on or culled everything from elephant to antelope with moderate vel. .416 solid, in effect a frontal area notably
smaller than some of the expanded softs from your .257 Wby, however, what the Rigby especially offered was bullet weight for penetration.
