When I was given the bullets ,I didnt know what velocity range they were for ,which is why I posted the message. As you said ,in a 30 06 they would probably hold together well. Oh well ,at least I got to test them on some pigs first before taking them on a scrub bull hunt. When I take the 300 wby along as a spare scrub bull rifle ,it will either be full of woodleighs or Barnes bullets.