I have used CCI Quick Shok with great success along with AE hollow points.
Each gun has its preferance, but my last Sako Fin Fire digested anything and everything.
All you had to remember what the point of impact changed with different brands of ammo.
So, it is best to have to clips loaded with choices of ammo and have at 'er !!!
Really there is no secret to killing these lil vermin.
Some will scurry off after being hit and die in their holes.
Others will die in the air as they are cart wheelin'
Just make sure you have a good supply of ammo with you.
2 bricks lasted about three days of shooting back in 02 and on one field we shot for 4 hrs and didnt move more than 150 yrds from the truck.
Of course your results will vary.
I have shot them out to 100yrds (paced) and its all about windage and elevation , you really kneed to know where your gun is shooting and how good you are with it.
Enjoy you trip to the land of Stubble Jumpers

Rob