i tried some a couple years ago and they were the worst shooting bullets i've ever tried.the owner worked with me and refunded my money when i gave up on them.i was using a stock remington and with copper bullets,the fit of the bullet to the bore is critical.if your bore is a couple thousands too large,forget it.also if the muzzle end of the barrel is larger than the breach,copper's will also never shoot.if your bore is a good fit to the bullet,they'll probably shoot very well.
try the groove bullets.they have an excellent reputation for accuracy and a better bullet for killing big game is not made. #1 whitetail