I don't shoot a .223, but have a .22-250 I've been shooting the 55gr. silvertips, the coyotes and red foxes don't seem to say anything when hit. I have the nosler BT in 55 grain also, they are fine, just haven't shot a lot of them. I tend to stay with what works. Everybody has their set ways about what works. the Silvertips have no trouble putting down deer in the .243 95gr either. They have many to their credit, finally was able to retain a bullet this last fall on a deer. Bullet looks good will want to weigh it and see how much fell away.