I shoot the Barnes MZ bullets in my .54 Knight (325 gr.) and in my .50 Encore (250 gr.) they are accurate and devastating on deer and bears. I use 120 gr. and 110 grains respectively. It's usually a total pass through with a huge hole on the off-side. I have also had a few drop dead in their tracks hits that looked like sledge hammers hit them. I wanna whack an Elk with them next. Should be interesting.