I should have mentioned, I have a Revere in .22, and it's a great rifle. But I do an equal amount of squirrel killing with a .177 HW100, and I see no significant difference.
Same here, less the Revere part. I have a few .22 rifles and often use an M10, Gladius, or Condor in that caliber for squirrels but the .177 HW100 and LGU have taken lots of them and generally more quietly and a bit safer. As to the heart shots, I've seen head shots be a little off and not be a quick kill but I've seen the same with a good body shot. I still shoot for the head when possible.
With larger calibers than .177, I might agree. However, with .177 and low power ( ~12fpe) I have found that head shots are more likely to result in less than clean, DRT kills.
I am almost always shooting from a rest. All improvised, but still a rest. Also, I am shooting in my backyard where I know my distances and have the luxury of being able to use a rest for nearly ALL of my shots.
Larger calibers do allow more fudge room, but I believe too many people rely on a larger caliber to take care of their lack of accuracy/precision. While I am not the best shot, I work very hard on accuracy/precision so I can make the shots I do while pesting. That is also why most of my shots are taken with a 4.5-27 power scope set to 27 power, even at distances as close as ~13 yards if lighting conditions allow. That allows me to choose a particular spot on the body (or head) and not simply aim at the body or head
in general.
Aim small, miss small.
This is what works for me and I have documented it as best I can on
AGN with posts about my chipper kills.
I used to be a head shot pester, but after a lot of trial and error, I have found the
precise heart shot to be the most effective on the 3 smaller pests mentioned above.
P.S. The
head/heart shot being the ultimate DRT kill shot when everything aligns perfectly.