For years, I've always relied on the .223 V-Max's, but a couple of years ago I bought a batch of Midsouth's Varmint Nightmares in 55gr flavor and they do quite well. With Varget, I haven't had to adjust powder or primer load and I still manage very acceptable groups from my CZ 527 and my FrankenAR. They're a good bargain. http://www.midsouthshooterssupply.co...nightmare2.asp
I've also seen the Sierra warning about using their match grade ammo on various forms of critterage. But, I also recall somebody saying something about somebody's match ammo having very thin jackets as well. I wonder about that because today's faster twists and higher pressures would spin apart a thin jacketed bullet- Wouldn't it?