What will do more damage on a crow at a 100 yards, a 17hmr or a 22wmr? Which one will leave a bigger entrence and exit wound?

I don't know but (dead is dead!!)

The 22mag will leave a bigger entry and exit hole as its a bigger bullet- especially the 30gr ballistic tip ones in the case of exit holes. FMJ will leave the smallest holes in 22 and if they are available in 17hmr, then they will be the absolute smallest exit hole you will get. 22 mag will probably buck the wind better and have a bit more oomph at hitting things.

You are splitting hairs. The .17HMR 20gr bullet has better BC and velocity. The .22mag is a very accurate and hard hitting round on vermin at 120- yards. It is all about the rifle and shooter. I like 40gr Maxi mags for .22WMR. The 33grBT I have don't cut it. If you buy a bottom line rifle, you get the results. The Marlin 917V I picked up is VG, My Browning A-bolt .22mag is better. Although the Browning has a field barrel, it is longer and has a much more solid action. You have been asking about H2's, HMR, and now .22Wmr. As stated before, dead is dead. You are sweating for nothing. Take its' head off and be done w/ it. I like my Marlin 60 .22lr for crows. I set up my shots and can usually get 2 before they take off. Jim

What will do more damage on a crow at a 100 yards, a 17hmr or a 22wmr? Which one will leave a bigger entrence and exit wound?

If the wind is blowing the 17HMR will completely miss the crow. The .22 Mag on the other hand won't.

The 17 grain bullet (B.C. 0.125)from a 17 HMR with a MV of 2550 ft/ sec will have about 1.5 inch wind drift in a 10 MPH cross wind. The 30 Gr Sierra JHP bullet ( B.C. 0.078) from a 22 WMR with a MV of 2,200 ft/sec will have about 3.3 inches of wind drift in a 10 MPH cross wind. At 100 yards the 17 grain bullet has about 140 ft/lb of energy while the 30 grain bullet has about 120 ft/lb of energy. I have not pluged the new Hornady 30 Gr V-Max bullet data into my ballistics program but it should have more energy at 100 yards than the 30 Gr Sierra bullet. At 100 yards there would not be much difference between the two rifles.

I keep hearing folks say their 17HMRs won't hit much past 50 yards if the wind is blowing.

I agree youve been asking about rimfire cartriges for a while. I believe every gun owner has to have a 22lr so get one of them for up close stuff ie 50 yards. When your comfortable with it and know what it likes and where it shoots, then you can try up to 100 yards on birds and rabbits etc. For a 100-150 yard gun for this similar game then go the 17hmr option, if you want to shoot coyotes within 100 yards then get a 22mag, but try to keep your shots as headshots etc, as you dont want an injured coyote running off.

You will find alot of stuff will be killed with one shot from a 22lr if you hit it in exactly the right spot at exactly the right time. However its often illegal to use this calibre especially for larger animals.

I would be getting a 22lr for the sake of it, they are so cheap to plink and will kill effectively on small stuff out to 100 yards if you know what your doing. Get a 17hmr for longer shots or more power up close. That will have your rimfire bases covered, then you can go up and get a higher powered centerfire for varmints at longer ranges and into some medium game calibers as well.

I keep hearing folks say their 17HMRs won't hit much past 50 yards if the wind is blowing.
depends on what you refer to as wind. even on a slight breezy day the .17hmr is realy good at 75 yrds i've found, however depending on how much breeze (over 5mph and under 10) the dance on that little round realy gets noticed after 75 yrds out to 100 yrds. the 1 1/2" drift as noted earlier is pretty much spot on at 100 yrds but at 75 yrds it is still pretty tight. can't explain it with #'s but i'm telling you there seems to be a real window between 75 and 100, at least in my past experiance. a 17 gr vmax bullet out of a hmr on a crow at 100 yrds would be fun to watch, explosive would be a good desciption. but on those real still mornings or late afternoons, those 17's can stack one on top of another time and time again if it is still out.

I have both guns and have shot small game with both. I feel your question is a little misdirected because first of all it's the bullet that damages the target, not the gun. Thus the real question is which of all bullet options will yield the desired effect? I think there are enough ammo options on the market to give you the performance you want with either cartridge. Try em out and see what you like. Second, you gotta hit the target in order to "damage" it thus I tend to place a bit more emphasis on scope selection. You'll do fine with either cartridge. Good luck, Randy