I'd disagree here. Either of the .17HMR or .22WMR will be better at 75-100yrds than a 12ga. Either rifle will have better range than the 12ga.

Relatively speaking, 00 buck pellets have energy somewhere between a .22lr and a .22mag (200ft.lbs. per pellet vs. 110ft.lbs. for a .22lr, and 325ft.lbs. for a .22WMR). The downside is that they're ROUND with a terrible BC, and are SLOW (1300fps for the 00buck, 1900fps for the .22WMR). The low momentum and energy, plus the blunt "nose" of the pellets give them relatively poor penetration.

For T shot, on the other hand, each pellet has about 1/3 the energy of a .22lr. Again, the same problems with the low momentum and energy yielding poor penetration, and the low velocity and poor BC giving a TERRIBLE trajectory.

So if you connect, it's not going to penetrate as well.

But what about connecting? I can almost guarantee that I'll connect with my Savage 93 .22WMR at 100yrds on a headshot. Hitting a 1-2MOA target is childsplay with a rifle. I've patterned my Benelli Supernova's with different chokes and 00buck and T at 100yrds, I CANNOT guarantee a kill shot connection at 100yrds. Heck, based on these patterns, I wouldn't even bet on it. With 1oz (9pellet) 00buck, the best patterns I can get at 100yrds are best measured in Minutes of Coyote, not MOA.

For the noise aspect, then the .22WMR is the clear answer of the two. The .22WMR is lower pressure and lower velocity than the .17HMR, so in general, it's all around quieter.