as the others said, i applaud you for knowing when not to take your shot because in this instance you couldnt settle down, but i think you need to study up on the round you're using a little more and realize the limitations set on this rimfire ammo just because of what it is.
Originally Posted By: SlickerThanSnotand if have something, anything bigger, than that 17hmr you should be thinking seriously about using it.
especially once you cross the 125yd barrier. the performance of the caliber degrades quickly beyond there.
the most common bullet - the 17gr vmax - has an minimum expansion threshold of 1600 fps. the closer you get to this required impact FPS - even without falling below it - the more chance you have of the projectile not performing as designed. at best, from a 22" barrel you're gonna get right around 2550 fps from it, the shorter the barrel the lower the MV
from varmital's page (link below for the full page)
so assuming you're getting a full 2550 with your gun, by 150 yds - you're barely scraping above the required impact velocity for the bullet to do anything more than just ice pick its way thru. without that expansion on target - and the energy dump, and permanant wound channel it creates when doing so - the round is effective neutered without an absolutely perfect shot.
add into that the wind deflection from that light little pill and the necessary accuracy described above goes straight out the window at extended distances.
I'm sure you're familiar with this weakness if you have any trigger time to speak of on the 17hmr on windy days.
the 17hmr is a wonderfully effective caliber within its designed box, however as you try to extend out further its limitations really show themselves. and then you're into a significantly higher chance of lost game due to injuries, etc.
when you start working with lower power cartridges (relatively speaking) and using bullets outside of their designed operating range you add to the complexity of any given hunting situation and that goes hand in hand with the likelyhood of a successful hunt.
heres some light reading on the caliber for you to digest to help make you a better hunter
http://www.varmintal.com/17hmr.htm
http://www.chuckhawks.com/17HMR.htm