From my experiences yesterday and today, the .17 Mach II is running out of steam @ 115-125 Yds. I popped two baby woodchucks about the size of a large Fox squirrel in the past 2 days, and while the bullet was a thru n thru (the chest) they still ran 20 to 40 feet before expiring. From the looks of things the bullet really didn't expand much, if any.
Kimber with a Simmons Aetec 3-12 x 50 scope (it's a wee bit large for the rifle, but it was laying on the shelf along with the rings when I got the rifle a year ago).
