It may depend on how far away they are too. I had a sounder of hogs that wouldn't stop walking at 300 yds. I had my .243 and I was using an 85g Barnes TSX bullet with a MV of 3350 fps.

I picked out the biggest one and let it fly. I heard the bullet hit, but they took off running and continued to run 1/2 mile until they were off of the property.

I'm still kicking myself that I didn't carry my 7mm Allen Magnum with me that morning when I checked the field.

www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).