Definitely not BAD...but not necessary either! All comes down to personal choice.. but I haven't witnessed it yet where it's a game changer on Deer, Moose or Elk or Black Bears, the 200+ gr bullets aren't killing my animals any differently than the 150-165 grs and often times the heavies punch right thru without the shock value.....might be just me!You say that but up until recently weren't mild velocity cartridges with high SD bullets what would've been used? Once we got past 1/2 inch round balls, we went to 1/2 inch flat nose, and then when we got to "high power" rifles all the crazy feats of small bores were done with 220 gr 30 cals, 175 gr 7mm, or 160 gr 6.5mm. Right? With monos and bonded rounds the game has changed but I don't find it a stretch to think heavy for caliber is bad when it comes to cup and core.