[/quote] Mule Deer, if .338 is 10% bigger than .308 and .358 and 9.3 is 10% bigger than .338, then it wouldn't be diameter that makes a difference. If using mono's then construction would be same. The shape of mono's would be similar. What would be the factor that would make .358 superior to .338 in these circumstances when .338 has better SD with same weight bullets?
You might want to read my post again, slower.
You also might want to read the chapter in GG2.[/quote] I did re-read what you wrote slowly as suggested. You said that it is expanded diameter that matters rather than the slightly bigger than fingernail unexpanded diameter. But my question was if you used a mono bullet (perhaps a Barnes TSX) of the same weight in both a .338 and .358, that was of similar shape, what would be the factor which would make the expanded diameter of the .358 considerably larger than that of the .338 bullet so as to make the .358 bullet kill better (when the .338 bullet has much better sectional density)? I would have thought that because both bullets were of the same construction (all copper), same shaped nose, that the longer .338 bullet with better sectional density would expand nearly as much (especially being longer),but penetrate deeper because of sectional density being better. Assume same velocity of perhaps 2750 fps.
