What one must keep in mind is, over the last 40 or so years, the fragile whitetail deer has evolved to include armor plate beneath their once thin skin. In addition, the American hunter has somehow developed an ability to see 450 yards through thick eastern woods or western forest. He has also come to believe that the ability to hit game at ranges of no less than 750 yards is a required skill.

It's rather amazing that feeble cartridges such as the 30-30 and 44-40 that once worked admirably in thick cover are now unable to dent the skin of even the wily coyote.

Such is progress.....ha....ha.

I lived and hunted in Wyoming for several years so plains hunting is nothing new to me, don't blow smoker up my skirts. The 7 X 57 is as adequate today, with 140 gr. bullets, as it was 75 years ago.
Any cartridge is no more effective than the person doing the shooting.