I reload for three different .223's, so for a few of my rifles, I just use factory ammo. They're both Bushmaster AR-15's with a 6 Right 1 in 9" twist. Our Gander Mountain has 40rnd Remington UMC 50grn JHP for $34 a box. I've had flawless reliability (several thousand rounds fired), great accuracy, and great performance on varmints and coyotes.

For handloading for coyote hunting, I use 50grn Nosler Ballistic Tips. The thickened jacket base (compared to Hornady V-max's) gives better weight retention upon impact, but the ballistic tips give explosive expansion, and the spitzer tip plus the boattail give great advantages for accuracy.

The Hornady A-Max and SST's are also great boattail spitzers, but the jacket base is too thin in my opinion. I've had problems with jacket failure with any thin-based varmint bullets.