Re: .22 WMR for woodchucks?
i use a .22 mag for everything up to turkey / coyote, and have lots of experience with the .22 mag for hunting.
for woodchucks using the 30 gr. vmax, depending on factors such as your ability, the rifles accuraccy, wind, yadda yadda, 150 yards wuld be about the average maximum ethical distance. the round is explosive enough to put them down even on an "off" shot. i've put them down farther out, but also have had them absorb the shot and limp on. not good, so now 150 is my max, and try my best to keep it to 125 or closer with the vmax. plus it's alot more fun to stalk 'em to within that distance. with 40 gr FMJ, 40 hollowpoints, or gamepoints, i feel comfortable a little farther out to restricting myself to 150, 175 max. just due to the better penetration you get from them loads.
while on the subject of 30 gr vmax:
squirrels - must take head shot or meat is destroyed. better off with a 40 gr hollow or gamepoint, or FMJ if your rifle will shoot them well. i use the 30gr for them and used to use the 34 gr winc. supremes, but again headshots or you end up with a pile of fur ridden squirrel burger and bone shrapnel.
rabbits, hares - same as the squirrel
grouse - same as the squirrel
turkey - use FMJ or game points, the hollow points and vmax are also a bit destructive on them, and do not provide enough penetration through the feathers to get to the vitals - good place to aim is the wing pocket, spine, or base of neck where it flares into the body. 100yds avg, 125 yds max
raccoon sized game and coyote - unless planning on taking them at short range, FMJ or gamepoints for the same reasons as turkey. 100 yds or less, 125 max.
hogs - no experience with them.
crows - any ammo that is accurate, unless eating them, refer to turkey. out to 200 yds. 30 gr vmax or 34 gr. winc. supremes out to 150/175 ish, 40gr FMJ, hollowpoints, or gamepoints out to 200 / 225 ish
but as with any firearm, it does rely on the effectiveness of shooter and the equipment they are using VS. the environmental factors of the day. i'll definately shoot at shorter distances if i know the rifle can't be consistantly accurate with a particular ammo out farther, or if wind and other weather restricts the possibility of a high percentage good hit.