You probably used the CCI 0052 Gamepoint referred to as a jacketed soft point. http://www.cci-ammunition.com/products/smallgame.aspx
CCI doesn't show the extended range ballistics but it is within 3 foot lbs of the 20 grain FMJ at 100 yds.
At 300 yards the .17HMR FMJ delivers 46 foot lbs. / 1,979.7 Foot pounds Per Square Inch Of frontal Area
The Federal FMJ 40 grain .22 Winchester Magnum Rimfire delivers 1,674 Foot pounds per Square Inch Of frontal Area at 300 Yards.
The Federal JHP 50 grain .22 Winchester Magnum Rimfire delivers 2,283 Foot Pounds Per Square Inch Of Frontal Area at 300 Yards.
Foot Pounds is a measure of the "Thump" delivered.
Foot Pounds per Square inch Of frontal Area Is a reliable indication of the Depth of Penetration of similarly constructed projectiles.
Ballistic charts furnish limited knowledge. No animals have steel skins and none of them are made of ballistic gel, boards, coconuts, watermelons, wet phone books, or rolls of wet toilet paper either. That's why I prefer shooting A-36 soft steel, it's a standard test material available worldwide and more reliable than memory.
A .17HMR 20 grain FMJ will penetrate .032" A-36 steel at 400 Yards. I have no idea what it would do to a prairie dog or jack rabbit but I bet there are members who do know.
Statements concerning wind drift about this cartridge are vastly overblown, consult the charts. The .17s are the most under rated cartridges in existence. When velocity is doubled the foot lbs. delivered are quadrupled.