i switched from the noslers to these on my .300 winmag as i was finding whenever i would eject an unshot cartridge my tikka would clip the tip of the bullet off. while i'm not even sure it would effect anything i saw the polymer tipped federals and found they shot exactly the same but don't suffer the same snip the lead tips did.
no change in grouping and while they don't have the nosler handle i assume expansion and penetration shouldn't be a problem being they're still premium ammunition.