Guys I have a H&R single shot .17 Mach 2. Picked it up for a song, Krylon'd it and shot the shit out of it. Seems to be a good rifle. What can I expect at 100yrds? 200yrds? I plan to really try to zero it this weekend off of a good rest, and see what it will do. Any idea the group this rifle is capable of? What effect does wind have on the little .17?