not for what you think. The reason that the .17HMR manufacturers came out with the 20 grain round is that the 17 grain round is TOO FAST.
Many users, myself included, ask the manufacturers to consider a 20 grain, and even a 25 grain round just for the purposes of allowing this accurate cartridge to be used on a wider variety of game. On game, the 17 grain round fragments and causes too much destruction. While an excellent feature, regarding ricochets, the meat destruction limited shots to "head shots" only. The 20 grain round travels a few hundred feet per second slower, thus allows the bullet to penetrate further, causing less pelt damage, while still providing a humane kill.
While the 17 grain round will "blow up" on contact, the 20 grain round will penetrate up to 15 inches of ballistic gelatin. This is a case where SLOWER is better. Joe