I totally agree.
Obviously
shot placement is the biggest variable of all, but it's also the hardest variable to isolate.
Like you say, higher velocity impacts (above 2400fps for example) will start to show more bloodshot, and above 3000fps can really make a mess.
Punch ribs in and ribs out, and there is not going to be much waste regardless of the bullet used.
These days I am really liking the fragmenting 'lead free' bullets. Due to fragmentation, double lung shots kill very quickly, but here is something you'll not see with an expanding lead core bullet;
This shoulder took an impact at over 3000fps.
View attachment 520157
Cleaned up real nice.
View attachment 520168
Something traditional 'cup and core' bullets simply cannot do.
I feel we need to be careful when we generalize - not all monolithic (all copper) bullets are equal, just as not all lead core bullets are equal.
If anyone would like more info, please feel free to PM me - I hesitate to name the projectile used in this case due to fear of ridicule